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Madonna wins 7 VMAs — her first in 27 years. No one has ever made a comeback quite like this.
Madonna opened Sunday's MTV VMAs with 13 nominations, tying Lady Gaga's single-year record.
LISTEN: Angela Ken releases new song 'tayo lang.'
OPM singer-songwriter Angela Ken has released "tayo lang," her latest single under Tarsier Records.
Angels Make Unfortunate MLB History on Last Day of Season
The Los Angeles Angels lost the final game of their season Sunday, making them the final team in MLB to lose 100 games in a single season. The post Angels Make Unfortunate MLB History on Last Day of Season appeared first on LA Sports Report.
In 1980, His Business Became The Fastest Company In History To Reach $1 Billion In Sales. Today, His Heirs Sit On Top a $453 Billion Combined Fortune. Here’s How Sam Walton Built the Biggest Retail Empire in America’s History
Sam Walton opened a single discount store in rural Arkansas in 1962 with no obvious path to greatness. What he built in the decades that followed rewrote every assumption about how fast a retail empire could grow and how much wealth one family could accumulate.
WHO recognizes healthy, innovative cities across the Western Pacific Region
Nine Healthy City champions from across the World Health Organization (WHO) Western Pacific Region received special recognition at an awarding ceremony during the 11th Global Conference of the Alliance for Healthy Cities in Sydney, Australia.The WHO Regional Office for the Western Pacific has presented the Healthy Cities Recognition Awards every two years since 2004 to celebrate innovative and impactful city-led initiatives that improve the health and well-being of urban populations.Eight cities received awards for their best practices, and one National Forum received the WHO Regional Director’s Special Award in recognition of its long-standing leadership in advancing the Healthy Cities movement.Awardees were selected through a rigorous evaluation process and recognized for demonstrating measurable, innovative and sustainable approaches to health challenges faced by cities.Remarking on the significance of the awards, Dr Huong Tran, Director of the Division of Health Promotion, Disease Prevention and Control at the Regional Office, said that, “There is no single blueprint for a healthy city. What works in one context may need to be adapted to another. But by sharing our experiences, including what worked, what was challenging, and what we learnt along the way, we can help one another move faster and further.”Award-winning cities and initiativesThis year's awards recognize outstanding city-led initiatives that have demonstrated measurable impact, innovation and sustainability in advancing health initiatives for urban populations.Baguio City (Philippines) – Data for equity: informing action, improving healthDr Donnabel Tubera-Panes, City Epidemiologist – Medical Officer IV of the Health Services Office accepted the award on behalf of Baguio City. Photo credit: Maria BoyadgisBaguio City was recognized for developing a pioneering Livability Index that provides village-level data across all 128 barangays (villages), enabling evidence-based planning and more equitable allocation of resources. By integrating community participation and institutionalizing the index within city planning and budgeting processes, the city has demonstrated how data can drive action to reduce health and social inequities.Eunpyeong-gu (Seoul, Republic of Korea) – Communities living in vulnerable situations: advancing health equity through community engagementVice Mayor Honourable Ahn Hyoung Jun accepted the award on behalf of Eunpyeong-gu. Photo credit: Maria BoyadgisEunpyeong-gu was recognized for its inclusive health equity programme supporting vulnerable populations, including isolated older adults and LGBTQI+ communities. Through peer-led community networks, social cooperatives and inclusive service design, the district has strengthened access to care, promoted social inclusion and advanced community ownership of health initiatives.Madiun City (Indonesia) – Adapting and mitigating climate-related crises: building heat resilience and preventing flood-related health risksMs Yuni Dwi Purwani, Secretary General of the National Forum for Indonesian Healthy Cities/Regencies, accepted the award on behalf of Madiun City. Photo credit: Maria BoyadgisMadiun City was recognized for its SUPERMIE (Sustainable Public Environmental Management Initiative) – a community-based environmental governance model that addresses urban flooding, climate resilience and environmental sustainability. The initiative contributed to reductions in flood-prone areas, greenhouse gas emissions, diarrhoeal disease and dengue fever, while at the same time improving food security through neighbourhood food gardens. The programme has already been replicated in 15 cities and regencies across Indonesia.Macao Special Administrative Region (China) – Protecting communities from tobacco and alcohol-related harms: tackling commercial drivers of riskDr LO Iek Long, Director of the Health Bureau, Macao SAR, China accepted the award on behalf of Macao. Photo credit: Maria BoyadgisMacao SAR was recognized for implementing a comprehensive and integrated approach to tobacco and alcohol control. Through legislation, monitoring systems, enforcement, public awareness campaigns and multisectoral partnerships, the programme has strengthened protection against major risk factors for noncommunicable diseases and established a model that is highly transferable to other urban settings.Phnom Penh Capital City (Cambodia) – Safe, active and health-enabling transport: advancing health and reducing inequities in urban mobilityH.E. Khoung Sreng, Governor of Phnom Penh Capital City accepted the award on behalf of Phnom Penh Capital City. Photo credit: Maria BoyadgisPhnom Penh received the award for its Safe School Zone Project, which combines infrastructure improvements, speed management, enforcement, education and stakeholder engagement to protect children and communities. The initiative has demonstrated measurable reductions in crashes and vehicle speeds while providing a scalable model for safer urban mobility across the country.Quezon City (Philippines) – Transforming food environments: addressing policy, market and urban design drivers of health and nutritionMs Jirah Asa M. Sideco, Chief of the Nutrition Section of the Quezon City Health Department accepted the award on behalf of Quezon City. Photo credit: Maria BoyadgisQuezon City was recognized for its public food procurement policy that promotes healthier diets through government-run institutions and feeding programmes. Supported by strong policy frameworks and monitoring systems, the initiative improves access to nutritious food for vulnerable populations while serving as a benchmark for other local governments.Samarinda City (Indonesia) – Preventing violence and promoting gender equality: transforming urban systems, norms and spaces Mrs Rinda Wahyuni, Chairperson of Samarinda Healthy City Forum accepted the award on behalf of Samarinda City. Photo credit: Maria BoyadgisSamarinda City was recognized for its multisectoral approach to preventing violence and advancing gender equality. Responding to local evidence on violence against women and children, the city has positioned violence prevention as a public health priority, bringing together health services, schools, social welfare institutions, law enforcement, civil society and community leaders to strengthen prevention, reporting, survivor-centred support and legal protection. Through inclusive policies, community engagement and sustainable city financing, Samarinda has developed a locally owned and scalable model for creating safer, more equitable and inclusive urban communities.Singapore – Age-friendly cities: transforming systems to bridge generations for a healthier tomorrowDr Tan Weng Mooi, Director, Integrated Health Promotion, accepted the award on behalf of Singapore. Photo credit: Maria BoyadgisSingapore received recognition for its Healthy Precinct Framework, which translates national healthy ageing priorities into neighbourhood-level action. The initiative integrates preventive care, social support, service coordination and age-friendly environments while actively engaging older persons, caregivers and community organizations. Its expansion across multiple precincts demonstrates its scalability and long-term sustainability.WHO Regional Director’s Special AwardNational Forum for Indonesian Healthy Cities/Regencies (Indonesia)Ms Yuni Dwi Purwani, Secretary General of the National Forum for Indonesian Healthy Cities/Regencies, accepted the award on behalf of the National Forum. Photo credit: Maria BoyadgisThe WHO Regional Director's Special Award was presented to the National Forum for Indonesian Healthy Cities/Regencies (FKKSI) in recognition of its long-standing leadership in advancing the Healthy Cities movement across Indonesia. As a national platform bringing together local governments, communities, academia and civil society, FKKSI has played a critical role in promoting collaboration, capacity-building, knowledge exchange and advocacy. Its efforts have strengthened and institutionalized healthy urban development nationwide and established a model for multisectoral engagement in the Region. Healthy Cities for allThe 2026 Healthy Cities Recognition Awards highlight how cities can lead transformative action on health by addressing climate change, inequity, ageing, nutrition, mobility, social inclusion, violence prevention and the commercial determinants of health. The recognized initiatives demonstrate that local governments, communities and partners can work together to create healthier, safer and more resilient urban environments for everyone. As urban populations continue to grow across the Western Pacific Region, WHO remains committed to supporting cities in advancing health, equity and sustainable development through the Healthy Cities approach and the Alliance for Healthy Cities. ###Note to editorsSince 2004, the WHO Healthy Cities Recognition Awards have provided a platform for cities to share innovative and effective approaches to improving health and well-being. The awards recognize achievements in areas including climate resilience, healthy ageing, health equity, gender equality, tobacco and alcohol control, urban mobility, nutrition and data-driven governance. In 2026, more than 150 submissions were received from cities and local governments across the Western Pacific Region. The titles and affiliations of awardees are presented as they were at the time the photo was taken.______________For more information, or to arrange media interviews, contact: WHO Regional Office for the Western Pacific: wprocom@who.int
Internationals Take Historic Presidents Cup Lead Into Sunday Singles
The International Team takes a 10.5-7.5 Presidents Cup lead into Sunday singles at Medinah, needing five points to end a 28-year victory drought.
Presidents Cup Sunday results: U.S. cuts into Internationals' lead as singles play begins
On the final day of the Presidents Cup, the United States attempts to rally to victory over the underdog International team.
Madonna opens the VMAs tonight with a record-tying 13 nominations. No one has ever made a comeback quite like this.
Madonna opens tonight's MTV VMAs with 13 nominations, tying Lady Gaga's single-year record, 27 years after her last win.
Presidents Cup 2026: Sunday Singles Pairings, Tee Times
Get the full rundown for Sunday singles at the Presidents Cup as the International team looks to stun Team USA. The post Presidents Cup 2026: Sunday Singles Pairings, Tee Times appeared first on HEAVY.
Small Business Tech News: Could One ChatGPT Prompt Help Earn You $100K?
Earning $100K may be possible with a single ChatGPT prompt. Also - HubSpot and Teams have new features and Meta's Muse is popular.
The story behind our autograph cards
Irish illustrator draws our boys by handOur new autograph card sets for the 2026/27 season are now available at the Bullshop!What makes this year’s edition special? Every single player has been indi...
There's a new shortcut in iOS 27 I’m using every single day — here's where to find it
iOS 27 introduces a handy new tool you’ll find yourself using all the time
K-Pop Giants' Stocks Plunge Despite Industry Success
K-Pop Giants Stocks Plunge Despite Industry Success HYBE, JYP decline due to single IP reliance; SM Entertainments diversification cushions fall
How Hong Kong’s old businesses are adapting to new times
Change does not follow a single formula and may involve creating new experiences, rebuilding unglamorous systems and adopting AI.
Expert picks for Sunday singles at the 2026 Presidents Cup
After three days and four sessions at the Presidents Cup, it's time now for the Sunday singles.
NFL Comes Down Hard on Broncos LB Alex Singleton
The NFL came down hard on Denver Broncos LB Alex Singleton for actions in Week 2 win over Jaguars. The post NFL Comes Down Hard on Broncos LB Alex Singleton...
Presidents Cup 2026: Sunday singles matches, starting times
The 16th Presidents Cup will conclude with 12 singles match on Sunday at Medinah Country Club.
How Steph Curry gave Warriors edge without any contract drama
If you know Steph Curry, you know his priority is finding joy. He doesn’t like drama. He’s not interested in distractions. He’s single-mindedly focused on feeling the thrill of his...
Robert Saleh Wants to Get One Titans Player More Involved
After a quiet debut, rookie Nicholas Singleton could see an expanded workload as injuries thin the backfield, providing the explosive Penn State product a chance to shine.
Microsoft Excel can now put multiple values in a single cell
Microsoft is changing one of Excel’s most familiar rules: a cell no longer has to contain just one value. The company has introduced lists, arrays in cells and nested arrays, giving users new ways to keep multiple pieces of information together without turning them into a single block of text. The features are currently rolling […]
Intel Panther Lake Teardown, 18A, BSPD, GAAFET, SemiAnalysis STEEL
Panther Lake debuts the first commercial implementation of backside power delivery (BSPDN), introduces Intel’s first iteration of gate-all-around (GAA) transistors, and showcases their advanced packaging capabilities with its Foveros-S assembly. With Panther Lake, Intel’s manufacturing arc has shifted from nebulous roadmaps to shipped silicon, a significant milestone on their long road back to competitive semiconductor manufacturing. To evaluate the extent of Intel’s comeback, we tore down Panther Lake. The SemiAnalysis STEEL teardown lab breaks down advanced datacenter and AI hardware. To learn more about our pipeline or to commission a teardown, contact sales@semianalysis.com. WE’RE HIRING: Architecture, floorplan, packaging, manufacturing, and labs experts. Opportunities from system to transistor and everywhere in between. Check out our Careers page. Our teardown traces 18A from its four-sheet RibbonFETs (Intel’s marketing name for GAAFETs) and gate stacks through contacts, frontside and backside wiring, and the bonded carrier. We explain how these material and integration choices improve gate control and reduce resistance, while adding capacitance, thermal resistance, and process complexity. Our measurements put Panther Lake’s 18A compute logic and TSMC N3E GPU logic at similar logic density. However, 18A does not lead TSMC N3P, N2 or Samsung SF2 in peak density. Panther Lake’s CPU cores are incremental updates, and the high-end GPU still uses TSMC N3E. Panther Lake assembles one compute tile, one GPU tile, and one I/O tile atop a passive base tile using Intel’s Foveros-S advanced packaging. Both compute tile variants use Intel 18A. The Xe3 GPU options are a 4-core GT1 tile on Intel 3 and a larger 12-core GT2 tile on TSMC N3E. Both I/O tile variants use TSMC N6. [1], [2] Our analysis centers on the PTL-U compute tile, both the 4-core and 12-core GPU tiles, as well as the 12-lane I/O tile. In conventional chips, power and signal are routed through the same frontside metal stack towards the device frontend. Power rails consume scarce routing resources near the transistors, while tall via stacks carry VDD and VSS from the coarse upper wires to local rails. Backside power delivery (BSPD) moves the main power network behind the transistor layer, to the backside, separating it from frontside signal routing. We covered BSPD and its impacts in 2024. [3], [4], [5] Intel’s BSPD implementation, branded as “PowerVia”, routes power through dedicated backside metals to nano-TSVs, which connect those rails to local source/drain (S/D) contacts. Implementing that separation requires Intel to build the interconnect stacks from both sides of the wafer. The frontside comprises the M0-M14 signal stack, while the backside comprises the BM0-BM5 power stack. M0 and BM0 are closest to the transistors. The nano-TSVs connect the two sides, but Intel patterns and etches each via from the front after forming the contacts. A narrow via runs from the side of the contact deep into the silicon substrate. Intel then completes the frontside signal metal stack, bonds the wafer to a carrier, flips it and removes the original substrate until the buried via tips are exposed. The backside metal stack is then deposited directly on the revealed vias. The nano-TSV and backside-via profiles taper in opposite directions because Intel forms them from opposite sides of the wafer. The transistor structures form the FEOL. Local contacts and nano-TSVs connect them to the wiring. M0 begins the frontside interconnect stack. The silicon carrier remains attached above the frontside interconnects. It supports the device wafer during substrate removal and backside processing and remains part of the finished chip’s thermal path. PowerVia removes the main power distribution from the congested frontside metals, routing supply through shorter and wider backside wires. Its lateral landing still occupies area in the standard cell, so it recovers less cell area than a direct backside contact. [3] Nano-TSVs beside the logic devices carry VDD or VSS from the backside power network, while signal connections continue upward through the frontside metals. Backside Interconnects Samsung SF2 data is included for comparison to Panther Lake’s within this article. SF2 is the incumbent GAA foundry node but lacks BSPD, serving as a useful reference to evaluate 18A. A full teardown of Samsung’s S26 products, processed on SF2, will be shared soon.Nanosheet-cut EDS comparison. The PowerVia supply path runs from the backside Cu rails through Mo-lined W nano-TSVs to the local transistor contacts. In this cross section, the tapered connection spans roughly 150 nm from the contact level to BM0. The Ta liner confines Cu and promotes adhesion to the surrounding stack; the AlOₓ etch stop controls the next dielectric etch above the rail. Dielectric beneath the ribbons electrically separates the devices from the backside wiring and removes the conducting silicon body below the channel. [6] AlOₓ serves as an etchstop (ES), enabling endpointing and protecting the underlying layers. Low-volatility aluminum fluoride reaction products resist the fluorinated plasma, allowing a thin AlOₓ film to protect the metal while the surrounding low-k dielectric is removed. [6], [7]. While the BM0 and layers above the M1 lines show double AlOx layers, Our SMIC N+3 teardown showed single AlOₓ layers. SMIC uses a simpler local AlOₓ substack, while the remaining cap and etch sequence provide the required landing protection. So why double layers? The closely spaced AlOₓ doublets provide two protected endpoints in the etch sequence. Intel documents an AlOₓ/SiN/AlOₓ stack that explains the benefit. The main dielectric plasma etch stops on the first AlOₓ film; a selective wet clear opens that film; a second plasma etch removes the intermediate SiN and stops on the second AlOₓ film. The final wet clear exposes the metal landing surface. SiN is the intermediate dielectric in Intel’s published example. [8] The second stop protects the metal through a cap breakthrough. Wide openings can etch faster than narrow ones, and etch depth varies across the wafer. Metal under an early-clearing opening would otherwise be exposed while other openings still need more etching. Staged protection widens the process window and reduces metal erosion, corrosion and void formation. [8] TSMC documents AlN/AlOₓ/SiOC/AlOₓ above Cu, with AlN blocking Cu diffusion, and a simpler AlN/SiOC/AlOₓ variant that omits one AlOx film. [9] Levels with different opening sizes, aspect ratios, pattern densities and cap materials need different etch margins. A double AlOx stop is useful where another protected endpoint justifies the added processing. The extra film adds formation, selective opening and cleaning steps, plus another set of interfaces to control adhesion, moisture, and stress. These blanket films are opened through the existing via pattern, so each film does not require another lithography mask. AlOₓ adds parasitic capacitance when it replaces lower-k dielectric; two thin AlOₓ films can nevertheless contain less AlOₓ than one thick film. Total thickness, placement, and theintermediate dielectric determine the electrical cost. Deposition chemistry also changes AlOx permittivity and residual hydroxyl content, which can oxidize the underlying metal. [7], [8], [10], [11] The backside stack separates into relatively fine BM0-BM2 wiring near the devices and coarser BM3-BM5 power distribution. The largest pitch increase occurs between BM2 and BM3. BM0’s pitch closely matches the logic-row height, fitting local power delivery to the cell rows. Higher levels aggregate current through larger conductors: routing density becomes less important than low resistance and current capacity as the network approaches the package. This hierarchy provides wide power wiring for the power delivery network without consuming scarce frontside signal-routing resources. [3] The SemiAnalysis STEEL teardown lab breaks down advanced datacenter and AI hardware. To learn more about our pipeline or to commission a teardown, contact sales@semianalysis.com. WE’RE HIRING: Architecture, floorplan, packaging, manufacturing, and labs experts. Opportunities from system to transistor and everywhere in between. Check out our Careers page. Frontside Interconnects Intel 18A combines Mo-lined W contacts and nano-TSVs with a separate backside Cu power network. Samsung SF2 keeps power on the frontside, using Ti-based contact interfaces and Ta-based barriers and Co liners around Cu wiring. In 18A standard-cell rows, backside power rails supply the devices through nano-TSVs within the cells, freeing frontside routing resources. Samsung’s M0 accommodates both power and signal connections. From the device toward M0, the connection runs through a Ti-based S/D interface, W contact fill, a Mo-lined W via, and the Cu M0 wire. Mo supplies a conductive nucleation and adhesion layer for W, replacing the resistive TiN liner used in conventional W integration. This increases the effective conduction volume within the feature while retaining W fill and its established polishing, cleaning and etching processes. Intel’s Mo/W patent describes this integration tradeoff. The nano-TSV uses the same Mo-lined W construction in the backside supply path. [12] The move from TiN to Mo is an incremental change. While a full Co or Mo fill can also reduce the volume lost to liners in very small features, it requires new integration schemes that increase complexity and risk. Cu remains attractive for wider wires due to its low resistance. As wires and vias shrink, the diffusion barrier consumes an increasing fraction of their cross-section. [12], [12], [14] Intel uses Co/Ru liners at M0-M1, Co at M2-M4, and Nb at M5-M9. The lower-level liners help Cu adhere and reduce void formation during trench fills. Applied Materials’ Endura has new thermal control that facilitate wetting process, so the thin film continuity is good enough that good capillary pressure will drive Cu atoms to the via bottom without voiding. Intel’s choice to use Nb is particularly interesting. Intel’s Nb patent describes a conductive diffusion barrier intended to reduce the barrier’s contribution to resistance relative to conventional Ta-based barriers, particularly at via bottoms where all current crosses the barrier. The patent pairs Nb in coarser levels with the option of lower-cost PVD processing. [15], [16] The upper metal layers support thicker barriers formed through physical vapor deposition (PVD) despite its worse coverage and uniformity. Meanwhile, the lower metal layers require thinner barriers deposited through conformal atomic layer deposition (ALD). Co/Ru adds another material interface and requires controlled deposition and Cu fill. Changing liners and barriers by metal layer allows Intel to optimize interconnect resistance, process complexity, and reliability. [15, 16] RibbonFET, Intel’s name for its gate-all-around FETs (GAAFETs), replaces the FinFET’s vertical fins with four stacked horizontal silicon nanosheets, allowing the gate to surround the channel on every side. The path to GAAFET begins with the planar transistor. A planar MOSFET places the gate above the channel between its source and drain. Pairing an NMOS with a PMOS transistor creates a CMOS inverter, in which the NMOS pulls the output low for a high input, and the PMOS pulls it high for a low input. The gate must retain electrostatic control of the channel to ensure clean switching. As gate lengths shrank, the drain began to compete with the gate for that control, increasing off-state leakage. Electrostatic control was restored through an architectural evolution that raised the channel into a vertical fin and wrapping the gate around three sides. Called “FinFET”, this new architecture packed more effective channel width into a smaller footprint. Further scaling made it harder to maintain both drive current and leakage within smaller cells, and reintroduced the same problems planar MOSFETs faced. Nanosheet GAAFETs close the fourth side by replacing the vertical fin with a stack of horizontal nanosheets, each surrounded by the gate. The tighter electrostatic control suppresses leakage at shorter gate lengths while stacking adds effective channel width within the cell footprint. In a FinFET process, channel width changes in discrete steps as designers must add or remove whole fins. Nanosheet width can instead be adjusted continuously within the process’s design rules. Wider sheets increase drive current, while narrower sheets reduce capacitance at the cost of drive current. Intel 18A uses stacks of four nanosheets each and varies their widths across logic and SRAM. At the process level, adding more sheets to each stack increases effective channel width and drive current, but complicates fabrication. RibbonFET vs MBCFET Samsung began GAAFET production in 2022 with SF3E, following with SF3 and now SF2. Its ‘MBCFET’ provides a useful structural comparison with Intel’s first RibbonFET implementation. [17] STEEL is digging deeper into SF2, used in the Exynos 2600, and TSMC’s GAAFET N2, used in Apple’s A20 Pro, in upcoming newsletter articles. We’re throwing some teasers on X. Let’s compare Samsung SF2’s MBCFET with Intel 18A’s RibbonFET. Subscribe Even to the untrained eye, Intel’s extra nanosheet is obvious. Intel stacks four ribbons to Samsung’s three. Samsung’s sheets are much wider in these fields, so both sheet count and width matter to the available channel perimeter. Sheet width also changes which silicon surfaces carry current. On conventional (001) silicon, wide nanosheets emphasize the broad top and bottom surfaces, favoring electron transport; the larger sidewall contribution in a narrow sheet favors hole transport. Thinner sheets improve gate control but increase confinement and scattering. This makes width and thickness part of the NMOS/PMOS balance, alongside strain and threshold voltage. [18], [19] GAAFET designs like 18A use different work-function-metal (WFM) stacks for NMOS and PMOS. Around each ribbon, a thin SiOx interfacial layer separates the silicon channel from the HfOx high-k dielectric, with La providing dipole tuning and the WFM wrapping the dielectric. NMOS uses a TiAl-based stack, while PMOS uses TiN WFM. W fills the remaining gate trench, providing a lower-resistivity path where the work-function layers are no longer needed. In this field, the PMOS stacks leave room for W between ribbons, while the NMOS stacks occupy more of those gaps. A silicon-based dielectric marks the P/N boundary, allowing the PMOS and NMOS gates, sharing the same gate trench, to be processed sequentially. Fast logic paths, retention circuits, and SRAM need a family of threshold options. Changing threshold without substantially changing device dimensions, capacitance or fabrication complexity is valuable. FinFET processes typically use different work-function-metal stacks. In a four-ribbon GAA stack, the narrow sheet-to-sheet gap limits how much WFM can fit around each channel. La in the gate dielectric creates interfacial dipoles at the SiOx/HfOx boundary, shifting effective work function and tuning threshold voltage. This gives Intel another control alongside its NMOS and PMOS WFM stacks. Low-threshold devices improve critical-path drive; higher thresholds reduce leakage elsewhere. Dipole tuning is especially useful in GAA because it changes threshold without consuming the narrow intersheet gap with thicker WFM. Precise control of La incorporation, diffusion and interface quality has long been a challenge, limiting viability in high volume production but is now seen from every leading-edge foundry. Intel’s patent describes depositing a dipole-forming oxide above HfOx and annealing it toward the interfacial oxide before completing the work-function and fill metals. This separates threshold tuning from the space available for metal. Newer research addresses the thermal cost: imec’s 2026 dipole-middle research inserts the shifter between two HfOx depositions, shortening the diffusion path while protecting SiOx during patterning. [20], [21]Matched-cut EDS, Intel 18A (left) vs. Samsung SF2 (right). Intel retains raised source/drain epi beneath its contacts, while Samsung recesses W deep into the epi to form a V-shaped Ti-lined interface. The deeper contact increases metal-to-semiconductor area and shortens the current path from the lower sheets, reducing contact and spreading resistance. It also removes epi volume and brings the contact etch closer to the channel ends. Retaining more epi preserves the material available for strain transfer, especially from SiGe into PMOS. These geometries balance contact access against stress engineering and etch margin. [22], [23] Samsung stacks three sheets to Intel’s four ribbons, and both processes use sheet width to tune drive strength. In our Samsung cross-sections, widths range roughly from 19 to 30 nm in the NPU rows and 37 to 50 nm in the CU cell. The Samsung nanosheets taper, with the widest sheet at the bottom and the narrowest at the top. Both processes use HfOx gate dielectric and Ti-based work-function stacks, with Al in the NMOS stack. In the Samsung devices shown here, the dielectric and WFM occupy the intersheet gaps, leaving W above the top sheet. Intel’s PMOS stack leaves more room between ribbons, and W fills those gaps while the thicker NMOS stack leaves W mainly in the upper trench. Gate-stack EDS maps. The W between Intel’s PMOS ribbons provides a conductive path close to the lower gates. Where WFM fills the entire gap, the gate still surrounds the channel, but voltage reaches it through the more resistive work-function films. Thinner WFM and dipole tuning preserve room for low-resistivity fill; Mo and Ru are alternative fill metals being developed for further scaling. [24] A masked, sequential WFM flow explains the different gate heights and inter-nanosheet fill. The proposed sequence below shows how separate NMOS and PMOS work-function steps produce that geometry. Enabled by the BSPDN process, Intel replaces the dense-logic silicon subfin with dielectric, removing the parasitic conduction path below the ribbons and reducing substrate-related capacitance. A retained silicon body as in classical, non-SOI, planar and FinFET designs needs junction and punchthrough-stop engineering to suppress leakage. Dielectric isolation makes that leakage less sensitive to the subfin doping profile but adds removal and fill steps. It also weakens the direct thermal path through silicon, making the contacts, metal stacks and package more important for heat extraction. [24], [26] Fluorine is concentrated around selected Intel device structures in the maps. WF6 is a standard precursor for W nucleation and fill, while barrier films protect adjacent dielectrics from fluorine attack. Low-fluorine W processes reduce the residual-F burden. Chloride-based precursors avoid introducing F during W deposition, but require control of chlorine attack, nucleation and fill quality. The integration target is a continuous, low-resistance W path with a thin protective liner and minimal chemical damage to the surrounding stack. [20], [27], [28] The SemiAnalysis STEEL teardown lab breaks down advanced datacenter and AI hardware. To learn more about our pipeline or to commission a teardown, contact sales@semianalysis.com. WE’RE HIRING: Architecture, floorplan, packaging, manufacturing, and labs experts. Opportunities from system to transistor and everywhere in between. Check out our Careers page. We measured cell height, gate pitch, metal geometry, and ribbon dimensions at the XTEM sites shown below. The tables group these dimensions by site and device polarity. Our “sheet cuts” cross the silicon channel and show the ribbons end-on. “gate cuts” run along the channel through successive gates. The 18A logic cell dimensions point to a five-track logic library while the N3E and Intel 3 cell dimensions evidence a seven-track logic library. The DDR-PHY uses wider M0 wires and much larger spacing than core logic. That trades routing density for lower wire resistance and weaker coupling between neighboring nets. The geometry suits the current delivery and coupling requirements of analog, clock, and I/O circuitry. PowerVia lets 18A combine a compact cell height with wider M0 geometry by moving the main power rails off the signal-routing tracks. That relaxes local wire scaling while preserving a small cell footprint. Cell height and gate pitch set the geometric density; pin access and routability determine how much of it a real block can use. [29] The biggest takeaway from our gate-pitch measurements is that Intel 18A compute logic and TSMC N3E GPU logic have similar density in the Bohr representative-cell model. The 18A example is 18.6% denser than the Intel 3 GPU example. Gate pitches are nearly identical across the three sites, so cell height drives most of the difference. The Bohr model combines a four-transistor NAND2 spanning three gate pitches and a 32-transistor scan flip-flop (SFF) spanning nineteen pitches, weighting their densities 60:40. The sensitivity column shows how independently changing cell height and gate pitch by ±1 nm changes the result. This compares representative cell geometries; whole-die density also depends on cell mix and placement. The 18A P-core gives M0 substantially more metal cross section than the N3E vector engine. Treating each profile as a trapezoid gives 2.63 times the area per line and 1.84 times the area after normalization by routing pitch. The larger section reduces the geometric contribution to line resistance and lowers current density for a given current. Taller and wider wires also add capacitance, so circuit delay depends on the balance of resistance and capacitance. The DDR-PHY has less metal area per routing width than the 18A core fields, while remaining above N3E. [30] Area = height × (top CD + bottom CD) / 2, including liners. Area/pitch normalizes by routing width. Taper is the symmetric sidewall angle from vertical, with the largest angle belonging to the DDR-PHY. Compute tile The measurements show how ribbon dimensions and gate-stack geometry vary across the compute tile and between NMOS and PMOS to balance channel drive, gate load and the space needed for the dielectric/WFM stack across logic, SRAM and the DDR-PHY. Width mainly changes available channel perimeter; thickness also changes electrostatic control and carrier confinement. Gate-stack thickness then determines the space left for low-resistivity fill P-core and LP E-core logic Both the P-core and LP E-core use multiple nanosheet widths. Widths are measured on high-magnification XTEMs while wider-field images demonstrate additional width choices within the LP E-core. Multiple widths are expected even within an LP E-core. Timing-critical paths, buffers and cells with different fanout need different drive strengths. The lower-magnification fields show this width diversity beyond the sites quantified in the table. L2 and L3 SRAM GAA gives SRAM designers another way to balance the pull-up (PU), pass-gate (PG), and pull-down (PD) transistors. FinFET bitcells set device strength through fin count while GAA adds nanosheet width as a sizing knob. In a 6T SRAM cell, a strong pull-down relative to the pass-gate limits read disturbance, while a strong pass-gate relative to the pull-up improves writability. During a write, the pass-gate and write driver pull the node storing “1” below the inverter trip point. During a read, the pull-down holds the node storing “0” low. Bias, threshold voltage, mismatch and assist circuitry set the remaining margin. FinFET high-current cells commonly use a PU:PG:PD fin-count pattern of 1:2:2, a device-sizing ratio rather than a current ratio. Ribbon width lets Intel balance SRAM strengths without adding whole fins. The L2 cell uses its narrowest ribbons for PU and widest for PD, improving writability and read stability respectively. Intel’s disclosed HCC operates without assist; its denser HDC uses negative-bitline write assist. Pulling the selected bitline briefly below ground increases pass-gate overdrive so it can overpower the pull-up at lower supply voltage. That buys density and low voltage writability at the cost of boosting circuitry, switching energy, and additional voltage stress that must be controlled. [31], [32] Four rectangular ribbons give the perimeter = 8 × (width + thickness), before corner rounding. PG/PU is 1.49 and PD/PG is 1.16. The L3 structures closely resemble L2 in layout and cell height. Fewer L3 nanosheet widths are tabulated because fewer high-magnification images were available. DDR PHY The DDR-PHY trades density for controlled analog behavior and reliable off-chip signaling. It contains drivers, receivers, delay circuits, and calibration logic that set drive strength, sampling time, and voltage margin. Repeated four-sheet devices with similar widths fit the use of regular transistor units for matching and programmable drive. Its wider local wiring provides room for current delivery and separation of sensitive signals, while consuming more area than a dense core-logic grid. The layout serves the memory channel’s electrical requirements as well as digital logic density. [33] The SemiAnalysis STEEL teardown lab breaks down advanced datacenter and AI hardware. To learn more about our pipeline or to commission a teardown, contact sales@semianalysis.com. WE’RE HIRING: Architecture, floorplan, packaging, manufacturing, and labs experts. Opportunities from system to transistor and everywhere in between. Check out our Careers page. Intel 3 GPU devices Vector engine logic Intel 3’s XVE logic uses two-fin PMOS and NMOS devices with power rails in M0. Its cell height and M0 pitch give a seven-track geometry, two tracks more than the 18A logic. One-fin groups also appear among the two-fin devices. Intel 3 L2 SRAM The Intel 3 L2 SRAM uses the familiar HCC sizing pattern: one PU fin, two PG fins, and two PD fins. N3E GPU devices Vector engine logic The N3E XVE field contains repeated two-fin devices with seven-track cell geometry. N3E remains a FinFET process, giving Panther Lake a direct FinFET-to-RibbonFET comparison. N3E L2 SRAM The N3E L2 SRAM uses the same PU:PG:PD fin-count pattern of 1:2:2. Panther Lake-U follows Lunar Lake’s floorplan quite closely. Both pair 4 P-cores with 4 LP E-cores and NPU, media and display engines in similar locations. Lunar Lake also uses Xe2, the direct predecessor to Panther Lake’s Xe3 GPU. This makes Lunar Lake the most direct basis for our comparisons. Arrow Lake differs in core count and uses the older Xe-LPG GPU architecture, so we only use it where it offers a more direct component-level comparison. Compute tile Panther Lake compute-tile floorplans remain sparse even months after launch. Intel 18A’s backside metal and dielectric stack must be removed without damaging the underlying structures before a clean transistor-level floorplan can be imaged. Most published die shots hide or heavily process the background, but we are quite proud of the die shot we achieved and are excited to show the work we have done. We measured the areas of the key components on the compute tile and compared them with their Lunar Lake predecessors on TSMC N3B. These help us to capture changes in block area and compare the two chips across process nodes and designs. Our total tile areas exclude the scribe-line area. The compute-plus-GPU subtotal below uses the PTL-U compute tile and GT1 GPU; it excludes the I/O tile and passive base. Individual block areas use the boundaries marked on the floorplans The compute-plus-GPU row is recomputed from the displayed PTL-U and GT1 areas. Component rows use their stated per-region counts and are not an additive partition of the whole tile. The P-core area remains almost unchanged between Lunar Lake and Panther Lake, despite L2 capacity increasing from 2.5 MiB to 3 MiB. Arrow Lake uses the same Lion Cove core as Lunar Lake but also has a 3 MiB L2. Cougar Cove fits 20% more L2 into the same P-core area. The larger private cache keeps more of each core’s working set close to its execution units, reducing access to shared L3 and DRAM. Extra capacity adds storage leakage and lookup energy, so designers balance it against avoided lower-level accesses. The shared P-core L3 cache also shrank by 14.8%. [2] Cougar Cove combines a similar footprint with Intel’s reported power-efficiency improvements. RibbonFET’s tighter channel control reduces leakage, while PowerVia reduces supply droop and allows tighter voltage guardbands. [1] Darkmont’s four-core LP E-core cluster is 5.0% smaller than Skymont’s on Lunar Lake, with most of the reduction in its L2 regions. The 1 MiB region shrank by 8.4% and the 1.5 MiB region by 14.9%. The tag arrays also use one fewer visible row. Tags identify which memory addresses the data array holds, so rearranging them changes the cache’s layout and wiring without requiring less data capacity. [2] The LP E-cores share one L2. This pools capacity and avoids duplicating all the cache machinery, but the four cores contend for its banks and bandwidth. Their separate cluster also keeps light work away from the performance cluster and its L3, allowing that larger domain to sleep. [1], [2] Cache area includes more than the storage cells. Tags identify each line, decoders select rows, sense amplifiers read the small bitline signal, and wires connect to the banks. Splitting an array into smaller sections shortens wordlines and bitlines, improving access speed, but duplicates peripheral circuits. Panther Lake’s smaller cache regions therefore reflect the complete memory implementation, including how much of each region is devoted to storage. [34] Unlike Meteor Lake and Arrow Lake, Panther Lake has no separate SoC tile. The NPU, LP E-cores, memory controllers, PHYs, media and display engines now share the compute tile. This removes an active die and keeps CPU memory traffic on one die. The cost is moving PHY and I/O-related circuitry onto 18A: drivers, receivers and analog circuits must still meet external voltage, loading and signal-integrity requirements, so their area does not shrink like dense digital logic. [1], [2] The biggest shrink comes from the NPU, which occupies 36.9% less area. NPU 5 consolidates the same total INT8 MAC count into half as many neural compute engines. Each of the three NCEs has a larger MAC array to make the complete NCE envelope 22.6% larger than an NPU 4 engine. Consolidation also halves the number of scratchpads and SHAVE DSPs, from 12 to 6. The MAC array handles matrix multiplication and convolution, while SHAVE executes vector and custom operations that fit the array poorly. [1], [2], [35] The paired floorplans identify each NCE envelope and its scratchpad, MAC, and SHAVE regions. Each measured MAC polygon is counted once per NCE in the area accounting below. The scratchpads store weights, activations, and intermediate results near the MAC arrays, allowing repeated use without fetching them again from DRAM. Halving their number delivers the largest measured area saving but leaves less local storage for the same total MAC count. Layers that no longer fit locally require smaller working tiles or more transfers of intermediate data. The benefit depends on keeping the enlarged arrays busy while managing that tighter storage budget. [36] NPU 5 also adds native FP8. Using half the operand width of FP16 reduces storage and transfer demand, helping workloads fit the smaller local memory budget. Lower precision and format-dependent range make scaling and model validation part of deployment. Hardware activation functions further reduce work that would otherwise occupy the programmable DSPs. [1], [2] Microsoft requires an NPU to deliver at least 40 TOPS for Copilot+ PCs. Both Lunar Lake and Panther Lake meet this threshold, but Panther Lake uses significantly less silicon. GPU tiles Panther Lake is Intel’s first product with Xe3, its latest GPU architecture. It offers two different GPU tiles: a smaller GT1 tile with 4 Xe3 cores on Intel 3 and a larger GT2 tile with 12 Xe3 cores on TSMC N3E. Panther Lake allows us to compare the same GPU architecture across both Intel 3 and TSMC N3E. Wildcat Lake adds a third Xe3 implementation on Intel 18A. A future newsletter will detail Xe3 and its implementation differences across all three process nodes. GT2 scales Xe3 to a different physical layout, with render slices arranged vertically instead of GT1’s horizontal arrangement. Slice placement sets the distances to shared cache banks and the D2D interface. Those wires consume area and add delay, so scaling the number of Xe cores also requires a new balance of cache placement, routing and timing. [1] What’s immediately obvious is that the GT2 tile on TSMC N3E has much smaller Xe cores than GT1. These block areas include logic, caches, and routing. An Xe core on the GT1 tile is ~69% larger than one on Lunar Lake, and ~55% larger than one on GT2. Intel 3 therefore uses substantially more area per Xe core. The block-area gap exceeds the measured logic and SRAM density gaps, bringing routing, timing targets, cell mix, and floorplan allocation into the comparison. The measured vector/matrix engine region is almost unchanged between Lunar Lake and Panther Lake’s GT2 tile. Xe3 retains eight 512-bit vector engines and eight 2048-bit XMX engines per core. Its gains also come from feeding those engines more effectively: more resident threads hide stalls, and variable register allocation lets shaders trade registers per thread against the number of threads kept active. [1] The shared L1/SLM capacity increased by 33% from 192 KiB to 256 KiB, while its area increased only 5%, raising effective density by 27%. L1 retains reused cache lines, while software-managed SLM lets a thread group share data locally. Both reduce traffic to more distant memory. Allocating more SLM per group can also limit how many groups reside on a core at once. [1], [37] The GT1 tile carries 4 MiB of L2 against 16 MiB on the GT2 tile. GT1 divides its L2 cache into four 1 MiB banks, while GT2 uses eight 2 MiB banks. Each bank contains 128 macros, but each N3E macro stores 16 KiB, twice the Intel 3 macro’s 8 KiB capacity. The N3E macro is only 54% larger while holding twice as many bits, giving it 30% higher density: ~23.7 Mbit/mm² versus 18.3 Mbit/mm². Including bank-level circuitry, the gap widens to ~16.9 Mbit/mm² on GT2 versus ~10.4 Mbit/mm² on GT1. GT2 gains density with its macros storing more bits per unit area, and those macros occupy more of each cache bank. Larger macros spread decoder and sense-amplifier overhead across more storage, while a more compact bank layout reduces the share spent on control and routing. The compromise is longer wordlines and bitlines that carry more capacitance. [34] I/O tile Panther Lake uses two I/O tile variants, both fabricated on TSMC N6. The smaller one provides 4 PCIe 5.0 and 8 PCIe 4.0 lanes and serves lower-tier systems as well as those without a discrete GPU, while the larger one adds 8 PCIe 5.0 lanes, bringing the total to 20 lanes, for discrete-GPU connectivity. Panther Lake SKUs with the larger 10- or 12-Xe GPUs use the smaller I/O tile. [38] The smaller I/O tile adds a PCIe 4.0 block and a Thunderbolt block to Lunar Lake’s I/O layout, providing four additional PCIe 4.0 lanes and another Thunderbolt 4 port. Its repeated N6 blocks retain nearly identical areas and layouts. Reusing these proven PHYs and controllers avoids porting and requalifying external interfaces on 18A, where faster digital logic offers less benefit to circuits constrained by the off-chip link. [38] SemiAnalysis’s teardown lab (STEEL) dives deep into the world’s advanced datacenter and AI hardware. To learn more about our pipeline or to commission a teardown, contact sales@semianalysis.com. We’re hiring technical experts from system to transistor and everywhere in between. Check out our Careers page. Panther Lake offers scalability and modularity through its disaggregated packaging that partition compute, GPU, and I/O silicon into separate tiles allowing for a suite of tile configurations. This partitioning makes the package part of Intel’s node economics as it determines how much leading-edge wafer area each product consumes, which functions can remain on other processes, and how much configuration freedom Intel can offer from a shared set of tiles. Furthermore, fabricating the compute and GPU tiles separately confines the new 18A process to the compute tile and allows graphics and I/O to use other, more established, and more cost-effective processes. For Panther Lake, the GPU and I/O tiles are assembled alongside the compute tile on a passive silicon base using Foveros-S. Intel’s current technology brief lists a nominal 36 µm pitch for Foveros-S. Through-silicon vias (TSVs) in the base connect the fine wiring above to the larger package connections below. The functional tiles sit side by side on that passive base in a 2.5D configuration. [39] Our cross-section through the compute and GPU tiles shows the package’s wiring hierarchy. Microbumps connect each active tile to the passive silicon base; its fine redistribution layer (RDL) carries the short, dense tile-to-tile links. TSVs carry connections through the base to the package substrate, which fans them out to the much coarser motherboard solder joints. The base supplies interconnect, while computation remains in the active tiles above it. [39] At the compute-tile edge, the higher-magnification inset shows a local microbump spacing of approximately 25.24 µm and a feature width of 12.33 µm. These local spacings are finer than Intel’s nominal Foveros-S value. The X-ray fields further confirm tighter neighboring bumps, consistent across every die-to-die area found on each tile. Additional X-ray analysis is offered after the paywall. Putting the memory controller beside the CPU removes the D2D transfer that CPU memory requests required in Meteor Lake and Arrow Lake. This avoids the extra transmitter, receiver, and link traversal, saving interface energy and latency. Panther Lake’s separate GPU still crosses a D2D link to reach DRAM, so its larger local caches also help contain package traffic. [1], [40] Smaller dies are less likely to contain a random fatal defect, and screening them before assembly prevents one bad tile from consuming a complete package of good silicon. Reuse also spreads design and qualification work across more products. Against those gains, Intel pays for the passive base, D2D circuits, extra bonding and test steps, and losses during assembly. Cost per working product across the portfolio captures the combined effect of wafer yield, reuse, test, and assembly. [29] Wildcat Lake packaging Intel launched Core Series 3, formerly Wildcat Lake, on 16 April 2026 for value mobile and edge systems. Wildcat Lake keeps 18A but removes the passive base and combines more functions on one die to simplify the package. The two products therefore reveal two distinct ways to commercialize the same leading-edge process. [41] Wildcat Lake’s 18A die combines up to two Cougar Cove P-cores, four Darkmont LP E-cores, two Xe3 cores and a smaller NPU. A separate platform-controller die supplies I/O, connected through UCIe, Intel’s first processor implementation of the standard. Consolidating graphics remove a tile boundary and the passive base, reducing assembly complexity for a modest-bandwidth value product. It also ties CPU and graphics scaling to the same die, giving up Panther Lake’s ability to swap in a much larger GPU. [42], [43] In July 2021, Intel CEO Pat Gelsinger set out an ambitious process roadmap aimed at regaining performance leadership by 2025, later described as five nodes in four years. Five years and one CEO later, Intel’s comeback story is not as unambiguously positive as Pat may have hoped. [44], [45] Intel once set the pace for process technology, bringing high-k metal gate technology and FinFETs into volume production years ahead of the rest of the industry. Its 22 nm FinFET process reached consumers with Ivy Bridge in 2012. [46] Intel’s integrated device manufacturing (IDM) model allowed its architects and process engineers to co-optimize products and processes. Starting with Sandy Bridge, Intel dominated x86, while AMD struggled with Bulldozer. That lead faltered at 14 nm and broke at 10 nm. Intel targeted a massive 2.7× density increase, but the node arrived years late and required several revisions before it could support Intel’s full lineup. This delay forced Intel to stretch 14 nm across six generations, while TSMC moved ahead in process technology and AMD recovered in x86. By 2019, Intel was still shipping 14 nm across most of its product stack, with its 10 nm client ramp focused on Ice Lake mobile processors. Meanwhile, TSMC was shipping N7 and N7+, and AMD’s Zen 2 compute chiplets used N7 to raise core counts and improve efficiency. Intel’s process failures were central to its decline, but unsound business decisions furthered their downward slide. Product delays compounded product mistakes, pushing client, server, and FPGA roadmaps off schedule. Several attempts to enter AI (Nervana and Gaudi) and networking (Tofino) also failed to establish lasting businesses. Intel’s recovery has focused on consumer CPUs and advanced packaging. Tiger Lake, Alder Lake, Lunar Lake and now Panther Lake have restored Intel’s consumer roadmap. On the process side, Intel 4 shipped with Meteor Lake, Intel 3 with Granite Rapids and Sierra Forest, and Intel 18A with Panther Lake. Intel has also made advanced packaging part of its foundry offering. However, Intel is still playing catch-up in servers. Several Xeon generations arrived years late and trailed contemporary AMD and Arm server CPUs in performance, efficiency, and core count. The process roadmap is back, but Intel does not hold the same process-technology leadership position it held prior to 10 nm. The introduction of gate-all-around nanosheets and backside power delivery are two of the biggest changes to transistor integration in a decade. Intel took on both changes at once: 18A paired its first RibbonFET with PowerVia in Panther Lake. Panther Lake is a substantial manufacturing milestone. Our cross-sections show how RibbonFET and PowerVia reshape local contacts and wiring, while the floorplans show where architectural consolidation and process choices save area. A sustained competitive lead depends on product performance, cost, yield, and the next implementation. The SemiAnalysis STEEL teardown lab breaks down advanced datacenter and AI hardware. To learn more about our pipeline or to commission a teardown, contact sales@semianalysis.com. WE’RE HIRING: Architecture, floorplan, packaging, manufacturing, and labs experts. Opportunities from system to transistor and everywhere in between. Check out our Careers page.. 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(ISCA), Jun. 2016, pp. 367–379, doi: 10.1109/isca.2016.40. [37] Intel, “Introduction to the Xe-HPG architecture,” Doc. 758306, Nov. 4, 2022. Accessed: Sep. 14, 2026. [Online]. Available: https://www.intel.com/content/www/us/en/developer/articles/technical/introduction-to-the-xe-hpg-architecture.html [38] Intel, “Core Ultra processors Series 3 for the edge,” Doc. 855291. Accessed: Sep. 14, 2026. [Online]. Available: https://cdrdv2-public.intel.com/855291/Intel%C2%AE%20Core%E2%84%A2%20Ultra%20Processors%20Series%203%20for%20Edge%20Overview_2.pdf [39] Intel Foundry, “Foveros technology brief,” Doc. 366411-001US, Feb. 2026. Accessed: Sep. 14, 2026. [Online]. Available: https://www.intel.com/content/dam/www/central-libraries/us/en/documents/2025-07/foveros-25d-product-brief.pdf [40] D. Das Sharma, “UCIe: Building an open chiplet ecosystem,” UCIe Consortium, 2022. Accessed: Sep. 14, 2026. [Online]. Available: https://www.uciexpress.org/_files/ugd/0c1418_c5970a68ab214ffc97fab16d11581449.pdf [41] Intel, “Intel launches Intel Core Series 3 processors,” Intel Newsroom, Apr. 16, 2026. Accessed: Sep. 14, 2026. [Online]. Available: https://www.intel.com/content/www/us/en/newsroom/news/client-computing/intel-launches-intel-core-series-3-processors-changing-the-game-for-everyday-computing.html [42] Intel, “Core Series 3 launch press deck,” Apr. 2026. Accessed: Sep. 14, 2026. [Online]. Available: https://download.intel.com/newsroom/2026/Intel-Core-Series-3/Intel-Core-Series-3-Launch-Press-Deck.pdf [43] Intel, “Intel outlines architectures for agentic AI at Hot Chips 2026,” Intel Newsroom, Aug. 24, 2026. Accessed: Sep. 14, 2026. [Online]. Available: https://www.intel.com/content/www/us/en/newsroom/news/client-computing/intel-outlines-architectures-for-agentic-ai-at-hot-chips-2026.html [44] Intel, “Intel accelerates process and packaging innovations,” Intel Investor Relations, Jul. 26, 2021. Accessed: Sep. 14, 2026. [Online]. Available: https://www.intc.com/filings-reports/all-sec-filings/content/0001193125-21-224438/d199788dex991.htm [45] Intel, “Intel reports third-quarter 2021 financial results,” Intel Investor Relations, Oct. 21, 2021. Accessed: Sep. 14, 2026. [Online]. Available: https://www.intc.com/news-events/press-releases/detail/1505/intel-reports-third-quarter-2021-financial-results [46] Intel, “3rd generation Intel Core processors bring exciting new experiences and fun to the PC,” Intel Investor Relations, Apr. 23, 2012. Accessed: Sep. 14, 2026. [Online]. Available: https://www.intc.com/news-events/press-releases/detail/577/3rd-generation-intel-core-processors-bring-exciting
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The Responsibility of Leadership
Leadership today requires more than delivering business results. Organizations are navigating unprecedented complexity, from economic uncertainty and workforce transformation to growing expectations around corporate citizenship and community impact. At the same time, communities are looking for leaders across sectors to help address challenges that no single institution can solve alone. For Greg Cunningham, leadership has
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Olivia Rodrigo, Charlie Puth, Sombr, Raye and Katseye set for 2026 iHeartRadio Jingle Ball tour
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Olivia Rodrigo, Charlie Puth, Sombr, Raye and Katseye set for 2026 iHeartRadio Jingle Ball tour
iHeartRadio is loading its 2026 holiday tour with some starry acts, including Olivia Rodrigo, Charlie Puth and the Jonas Brothers | WBBM Newsradio 780 AM & 105.9 FM
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Calling all current and future scientists: Kiel is the place to be this week
This week, Kiel has become a meeting place for science in Europe. Researchers, school pupils, young scientists and members of the public are coming together through a series of major events led or co-organised by Kiel University.At the centre of it all are around 150 of Europe’s most talented young researchers, aged 14 to 20, who have travelled to Kiel from nearly 40 countries for the 37th European Union Contest for Young Scientists (EUCYS). Running from 22 to 27 September, the European Union’s flagship competition for young scientists brings together winners of national science competitions to present around 100 original research projects across fields ranging from engineering and computer science to medicine, environmental research and the social sciences. The winners will be announced at the Award Ceremony on Saturday.For Kiel University, hosting EUCYS is both an honour and a natural extension of a much longer story. Germany’s northernmost comprehensive university has invested for many years in supporting young scientific talent and bringing research into dialogue with society. The Kiel Science Factory gives school pupils opportunities to experience research first-hand, while programmes such as Rent-a-Scientist send researchers directly into local classrooms. Major annual public events including Kiel Week and the European Researchers’ Night take science beyond the campus through talks, exhibitions and hands-on activities.That long-standing commitment has increasingly taken on a European dimension – and this week, many of those efforts are coming together.One of the foundations for this success is the European Researchers’ Night (ERN), which celebrates its tenth edition in the Kiel region this year. The initiative is funded through the Marie Skłodowska-Curie Actions, with Kiel University developing the successful EU proposals and securing the funding, while regional partner KielRegion coordinates the many activities on the ground. Together with research institutions, schools, companies, local authorities and civil society, they have built ERN into a major platform for public engagement.Over the years, Kiel’s ERN programme has grown far beyond a single evening into a whole “Science Summer”, beginning with “Science Shopping” in spring and culminating tomorrow, 25 September, in Science Day.“We have developed a wide range of public engagement formats, often together with the other research institutions in the region, the city and regional authorities, schools, companies and civil society,” says Eckhard Quandt, Kiel University’s vice president for research, academic infrastructure and transfer. “Over the past decade, we have increasingly taken this commitment to the European level.”That combination of European funding expertise and strong regional partnerships also helped Kiel University take the next step. Drawing on its experience with ERN and its European networks, including the SEA-EU University Alliance, the university brought together Brest in France and Split in Croatia for a successful bid to the EU’s new Science Comes to Town initiative. Throughout 2026, the three cities are serving as Europe’s first Science Ambassadors, with more than one thousand activities bringing science into schools, public spaces, cultural venues and everyday life.EUCYS is perhaps the clearest example of how Kiel University is using Science Comes to Town to create new connections between major European initiatives. From the outset, the university deliberately planned the contest for the week of European Researchers’ Night and opened the EUCYS exhibition to the wider Science Day audience. Tomorrow, that means thousands of visitors can encounter the next generation of scientific talent first-hand, while the young researchers themselves gain a much bigger public stage.“Because we opened EUCYS up for European Researchers’ Night, there will be a lot of people actually visiting the exhibition,” says organiser Stefanie Altemark of Kiel University.“We wanted Europe’s most talented young scientists not only to compete with one another, but also to become visible to the wider public. At the same time, people in Kiel will have the opportunity to see what the next generation of scientists are already capable of,” says Quandt.“We’ve shown over the last years that science is a big part of Kiel, and it’s always been the goal to not only show that to people in Germany, but also to show it to people all over Europe. Thanks to Kiel University’s expertise in European funding programmes, we have been able to turn that ambition into reality,” says Sünje Fock, who is coordinating the Science Summer at KielRegion.The model is characteristic of Kiel University’s approach: combining European funding expertise and international networks with strong regional partnerships to give major initiatives greater reach and visibility.This year also marks the 30th anniversary of the Marie Skłodowska-Curie Actions, giving Kiel University the special opportunity to welcome Vanessa Debiais-Sainton, Head of Department for the Marie Skłodowska-Curie Actions at the European Research Executive Agency, to Kiel tomorrow. Her visit brings together two priorities that have shaped Kiel University’s work over the past decade: supporting researchers and bringing science closer to society. Debiais-Sainton emphasises how closely the two are connected: "For thirty years, the Marie Skłodowska-Curie Actions (MSCA) have given more than 150,000 researchers the chance to pursue their dreams and open up new fields. Doctoral Networks and Postdoctoral Fellowships give them the freedom to move, to connect, to train and to follow their curiosity across borders, sectors and disciplines. But excellence cannot live only in laboratories. Researchers’ Night takes science out of the lab and into the city, to the families, the schoolchildren and the curious minds who will become the next generation. Kiel shows what that looks like at its best. That is the MSCA promise: open science, open borders, open doors."For Kiel University, these activities are not separate endeavours. They are part of a broader understanding of academic excellence in which outstanding research, talent development, international cooperation, knowledge transfer and engagement with society strengthen one another.“For me, one of the most important lessons from the past decade is that scientific excellence, knowledge transfer, talent development and engagement with society cannot be treated as separate tasks,” stresses vice president Quandt. “They reinforce one another.”That philosophy is also reflected in Kiel University’s current bid for Germany’s Excellence University status. The designation is part of Germany’s national Excellence Strategy, which provides substantial long-term funding to selected universities to strengthen internationally competitive research and their overall institutional development. A successful outcome would provide new opportunities to build on what has already been created: deepening international cooperation, creating more opportunities for knowledge exchange and public engagement, and extending the university’s reach across the region and beyond. “If we are successful, it would allow us to take what we have built in Kiel considerably further – including expanding our networks and transfer activities beyond the region and increasingly across the Baltic area,” says Quandt.This week’s events offer a glimpse of what that could mean in practice: a university using its research strength, European expertise and regional partnerships to create opportunities for scientists at every stage of their careers while making science more visible, accessible and exciting to the wider public.
Single-tenant shop space offers high-visibility west-side opportunity
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Health Care Partnership outlines workforce progress
More local nursing graduates are staying in the region, according to officials offering an update on the progress of the New Hanover Healthcare Career Partnership at a public forum last night. According to Jack Watson, dean of UNCW’s College of Health & Human Services, the number of UNCW nursing graduates choosing to remain in the area after graduation has climbed from 27% to the mid-40% range. The New Hanover Healthcare Career Partnership aims to address the region’s healthcare worker shortage, with a key focus on nursing through strategic partnerships between UNCW, Cape Fear Community College (CFCC), New Hanover County Schools and the Wilmington Chamber of Commerce Foundation. "Each of the partners had pathway programs,” said Watson, “but they were almost at times done in a silo." One of the New Hanover Community Endowment's largest commitments to date, the collaborative received a $22.3 million grant in 2023, to be disbursed over three years, beginning in 2024. At the public forum, leadership addressed the nursing bottleneck created by the pandemic, and Laurie Whalin, president of the Novant Health Coastal Region, acknowledged that Novant Health had relied heavily on travel nurses during that period, with travel nurses making up about 47% of staff and nursing turnover at 35% at the height of the pandemic. "I can say we are in a tremendously different place today,” Whalin said at the forum. The number of travel nurses employed by the Novant Health Coastal Region has dropped to around 100 today, which Whalin says accounts for less than 4% of the workforce. Roughly two years into the grant term, major stakeholders in the collaboration pointed to various accomplishments tied to the initiative. According to Stephen Hill, vice president of talent development with the Greater Wilmington Chamber of Commerce, 250 more nurses live in New Hanover County in 2026 than in 2023. Whalin added that between 2021 and 2025, the Novant Health Coastal Region has hired close to 1,200 registered nurses. Additionally, according to Whalin, over the past two years, hiring and retention of nursing graduates from UNCW increased by 103%, while hiring and retention of nursing graduates from CFCC increased by 70%. Mandy Mills, director of career & technical education at New Hanover County Schools, pointed to the launch of its first Health Sciences Academy program, established across the county's four traditional high schools (Hoggard High School, Laney High School, Ashley High School and New Hanover High School), which started with 38 students last year. Mills also pointed to growth in the district’s Nursing Fundamentals course, which grew from 10 seats in 2023 to 50 in 2025-2026 and is now offered at all four traditional high schools. Watson emphasized the growing nursing class sizes and offered an update on the school’s accelerated nursing degree, which launched last year. Eleven students graduated in the first class, and all passed their boards on the first try, Watson said. This year’s class has 24 students. When the endowment announced its $22.3 million grant for the collaborative in 2023, UNCW and CFCC were each slated to receive the bulk of the funds, at about $10 million each. UNCW’s plans for the grant money included expanding its simulation lab, Watson said. He added that construction is expected to begin on the simulation lab this year and will likely extend through next year. According to Mary Ellen Naylor, dean of Health & Human Services at CFCC, the college has experienced growth in its associate degree nursing retention, rising from 59% in 2023 to 76% for the May 2026 class. CFCC used part of its endowment funding to support wraparound services, including a housing stipend, tuition assistance, exam assistance, emergency assistance, drop-in daycare and clinical and educational supplies. "We have very strong … students, but once they get into the program, there are competing priorities,” Naylor said. “They are working multiple jobs. They have children. They're single parents." According to Naylor, in 2026, 94% of students who used support services are still enrolled or have graduated. Addressing a question from an audience member about an approaching “enrollment cliff,” driven largely by dropping birth rates, Watson and Naylor said demand remains strong at both schools. “Right now … we do have more applicants than we have spots in our nursing program, and it is still a competitive process to get into,” Watson said. “I do not foresee that changing.” "(We've) doubled enrollment in our nursing programs over the last few years, but just as Dean Watson said, we still have very robust applicant pools, so it is still very competitive to get in,” Naylor said. "We have the applicant pool to support that, but again, it's not as easy as just saying, 'Okay … we're going to take another 90 students.' It's making sure all the resources and infrastructure that we need to educate the students outside the classroom is there as well." In response to a question about applying the collaborative model to other healthcare positions besides nursing, Sophie Dagenais, CEO and president of the endowment, said she sees the potential for the model to expand to other healthcare jobs and even other industries, but that the endowment hopes to learn from this model first. “This is a grant that is in year two of three years, and first we wanted to learn what is this going to demonstrate, what will we learn and then how may we scale it possibly,” she said. According to endowment spokesperson Amber Rogerson, funds for the program are set to expire after June 2027. “It's too early to discuss what happens after that,” wrote Rogerson in an email, “though we know the partners are considering the future, and some of the work supported by the grants is now built into their regular operations.”
Health Care Partnership outlines workforce progress
More local nursing graduates are staying in the region, according to officials offering an update on the progress of the New Hanover Healthcare Career Partnership at a public forum last night. According to Jack Watson, dean of UNCW’s College of Health & Human Services, the number of UNCW nursing graduates choosing to remain in the area after graduation has climbed from 27% to the mid-40% range. The New Hanover Healthcare Career Partnership aims to address the region’s healthcare worker shortage, with a key focus on nursing through strategic partnerships between UNCW, Cape Fear Community College (CFCC), New Hanover County Schools and the Wilmington Chamber of Commerce Foundation. "Each of the partners had pathway programs,” said Watson, “but they were almost at times done in a silo." One of the New Hanover Community Endowment's largest commitments to date, the collaborative received a $22.3 million grant in 2023, to be disbursed over three years, beginning in 2024. At the public forum, leadership addressed the nursing bottleneck created by the pandemic, and Laurie Whalin, president of the Novant Health Coastal Region, acknowledged that Novant Health had relied heavily on travel nurses during that period, with travel nurses making up about 47% of staff and nursing turnover at 35% at the height of the pandemic. "I can say we are in a tremendously different place today,” Whalin said at the forum. The number of travel nurses employed by the Novant Health Coastal Region has dropped to around 100 today, which Whalin says accounts for less than 4% of the workforce. Roughly two years into the grant term, major stakeholders in the collaboration pointed to various accomplishments tied to the initiative. According to Stephen Hill, vice president of talent development with the Greater Wilmington Chamber of Commerce, 250 more nurses live in New Hanover County in 2026 than in 2023. Whalin added that between 2021 and 2025, the Novant Health Coastal Region has hired close to 1,200 registered nurses. Additionally, according to Whalin, over the past two years, hiring and retention of nursing graduates from UNCW increased by 103%, while hiring and retention of nursing graduates from CFCC increased by 70%. Mandy Mills, director of career & technical education at New Hanover County Schools, pointed to the launch of its first Health Sciences Academy program, established across the county's four traditional high schools (Hoggard High School, Laney High School, Ashley High School and New Hanover High School), which started with 38 students last year. Mills also pointed to growth in the district’s Nursing Fundamentals course, which grew from 10 seats in 2023 to 50 in 2025-2026 and is now offered at all four traditional high schools. Watson emphasized the growing nursing class sizes and offered an update on the school’s accelerated nursing degree, which launched last year. Eleven students graduated in the first class, and all passed their boards on the first try, Watson said. This year’s class has 24 students. When the endowment announced its $22.3 million grant for the collaborative in 2023, UNCW and CFCC were each slated to receive the bulk of the funds, at about $10 million each. UNCW’s plans for the grant money included expanding its simulation lab, Watson said. He added that construction is expected to begin on the simulation lab this year and will likely extend through next year. According to Mary Ellen Naylor, dean of Health & Human Services at CFCC, the college has experienced growth in its associate degree nursing retention, rising from 59% in 2023 to 76% for the May 2026 class. CFCC used part of its endowment funding to support wraparound services, including a housing stipend, tuition assistance, exam assistance, emergency assistance, drop-in daycare and clinical and educational supplies. "We have very strong … students, but once they get into the program, there are competing priorities,” Naylor said. “They are working multiple jobs. They have children. They're single parents." According to Naylor, in 2026, 94% of students who used support services are still enrolled or have graduated. Addressing a question from an audience member about an approaching “enrollment cliff,” driven largely by dropping birth rates, Watson and Naylor said demand remains strong at both schools. “Right now … we do have more applicants than we have spots in our nursing program, and it is still a competitive process to get into,” Watson said. “I do not foresee that changing.” "(We've) doubled enrollment in our nursing programs over the last few years, but just as Dean Watson said, we still have very robust applicant pools, so it is still very competitive to get in,” Naylor said. "We have the applicant pool to support that, but again, it's not as easy as just saying, 'Okay … we're going to take another 90 students.' It's making sure all the resources and infrastructure that we need to educate the students outside the classroom is there as well." In response to a question about applying the collaborative model to other healthcare positions besides nursing, Sophie Dagenais, CEO and president of the endowment, said she sees the potential for the model to expand to other healthcare jobs and even other industries, but that the endowment hopes to learn from this model first. “This is a grant that is in year two of three years, and first we wanted to learn what is this going to demonstrate, what will we learn and then how may we scale it possibly,” she said. According to endowment spokesperson Amber Rogerson, funds for the program are set to expire after June 2027. “It's too early to discuss what happens after that,” wrote Rogerson in an email, “though we know the partners are considering the future, and some of the work supported by the grants is now built into their regular operations.”
Early childhood BMI trajectories predict later cardiometabolic health risks
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GOP challenger gets within single digits of blue-state gov despite Dem's massive advantage
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Xbox is merging its Forza developers into a single studio
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New Report Warns AI Could Close a 70-Year Gap in Weather Forecasting for Health or Widen It Without Deliberate Action
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Voices: No single organization can address Utah’s mental health crisis alone. We need a new response.
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Stanford researchers have recorded the first real-time quantum jumps of sound, watching single phonons abruptly vanish from one energy state to another. The breakthrough could open new paths for quantum computing, error correction, highly sensitive biological sensors, and next-generation sound-based devices.
Banijay Entertainment Brings Back Romance with Nordisk Film TV’s Date Knight
Media and entertainment group, Banijay Entertainment, today unveils a brand-new dating reality format Date Knight. Produced by Nordisk Film TV, part of Banijay Nordic, for Danish public broadcaster DR, the format will join the group’s portfolio of new IP heading to MIPCOM. Date Knight invites singles to step into a spectacular romantasy world where epic […]
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September 21, 2026 AUSTIN – During National Forensic Science Week, the Texas Department of Public Safety (DPS) is proud to recognize the hardworking men and women of the Crime Laboratory Division. “Texas is a leader in forensic science because of the incredible men and women working in DPS Crime Laboratories across the state every single day to help…
Poetic Science in Plato's "Timaeus" ~ The Imaginative Conservative
What happens when one mixes science and poetry in the way that Timaeus does? What can we learn from this strange mix? My intention is to place before us some important themes that connect poetry and science. She was the single
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The Big Holes in Wearable Heart Rate Variability And Readiness Scores
On September 9th, Apple announced it was revamping its Apple Watch Health Sensing System, rolling out a Readiness score (0 to 10), and increasing the frequency of heart rate variability (HRV) outputs 24-fold. This can be viewed as upping its competition with various other consumer wearable sensors. These “readiness scores” as a composite of multiple metrics, with heart rate variability (HRV) being front and center for most. The majority of Americans are now using wearable sensors, which equates to well over 100 million adults. HRV and Readiness scores are increasingly being marketed as a measurement of autonomic nervous system health, a digital marker for future disease, a clock for biological age, and a holistic metric to promote healthspan and even longevity. (Apple also introduced a new longevity tab and “Health Age”.) None of this has been proven. In this edition of Ground Truths I am going to review what we know about heart rate variability and readiness scores. Heart Rate Variability HRV is the variation in normal heart cycle timing. The variability of the heart rate, the barely perceptible millisecond changes in time between consecutive heart beats (see R-R intervals in the Figure below, left panel), is due to interplay between the sympathetic and parasympathetic (vagal nerve) inputs. Distinct from heart rate, individuals with the same heart rate can have very different HRVs. It is a rough reflection of the autonomic nervous system (ANS) activity, inadequate to say whether a person’s ANS function is abnormal. For more than three decades, heart rate variability (HRV) has been measured and several studies have found an association of low HRV and clinical outcomes, particularly a link with higher all-cause and cardiovascular mortality. There have also been less well established links of low HRV to risk of early cognitive impairment, dementia, mental illness, Type 2 diabetes and substance abuse. An important reminder is that HRV is a surrogate marker without any established cause-and-effect relationship. If you increase your HRV, that doesn’t mean it will improve health outcomes. In fact, there is no hard evidence for that. All that work linking to health outcomes was done with electrocardiogram (ECG) derived HRV. Now, in the era of consumer wearables, this is getting assessed differently, by optical pulse (yes, the lights you see) plethysmography (PPG) or what is called pulse rate variability (PRV). They are not the same, as shown below (right panel) and only concordant when the delay between the ECG and pulse is kept constant, which basically means at rest. I should mention there’s also what I will call MPV, a mattress mechanical movement sensor, a derived heart rate variability, that companies like Eight Sleep use, even further away from directly measuring HRV. HRV has not one uniform measurement but many different types of quantification, such as RMSSD, the magnitude of difference between successive R-R intervals of normal sinus beats (N-N) or SDNN, the standard deviation of NN intervals, both in milliseconds. SDNN is one of the so-called frequency domain HRVs (others are LF, HF, LF/HF). Different wearable sensors use different metics; Apple has relied on SDNN and nearly all of the others use RMSSD, which is generally considered the more accurate metric. There’s also the different length of time measured, such as for a matter of minutes, all day, or an overnight’s sleep. Short measurements are especially problematic since they don’t capture enough of respiratory modulation and other factors that influence HRV. Share Ground Truths How well does HRV correlate with PRV? There are very limited studies, especially independently done. One that is commonly cited was conducted by Air Force researchers in only 13 healthy adults assessing Oura ring 3 and 4, Whoop 4.0, and Garmin Fenix 6 and showed a correlation coefficient of 0.88 to 0.97 and a mean absolute percentage error from 6 to 10%. The correlation is not a perfect 1.0, but there’s at least a fairly high level of correlation. HRV is supposed to increase during the night due to takeover of the parasympathetic nervous system, and higher during deep sleep. A recent example of my 1 week, all day “HRV,” and one during sleep is shown below. As you can see, the N of 1 data are inconsistent for the same days from different sensors (Oura, AppleWatch, Fitbit Air, and Eight Sleep) by patterns, absolute numbers, and comparison with prior days and weeks. The largest study in over 8 million Fitbit users (the old version, not Google Fitbit Air, introduced in May 2026) gives you a sense of the effect of age, sex, and the 2 different main HRV (here PRV) metrics, with RMSSD on the left and SDRR (=SDNN) on the right below. That study, from data collected in 2018, is a major outlier, since all the more recent ones are tiny with respect to sample size. Many of the companies have not had independent evaluation of their HRV, such as Eight Sleep, but have published a low standard error on their website. There are some other published studies on the correlation between HRV and PRV, but they are all small and only in healthy adults. A scoping review emphasized the lack of study in underrepresented individuals, including the aged, people of color (which affects the PPG signal), and individuals who are underweight or obese. Add the typical adult age 60 plus with one or more chronic diseases. For example, one study in over 900 adults found poor correlation of HRV and PRV, non-uniformly underestimated across many chronic diseases (cardiovascular, endocrine, neurological, respiratory, and others), concluding PRV is “an invalid surrogate for HRV.” A recent systematic review of 43 studies comparing HRV and PRV found reasonable pooled absolute standardized error (HRV as gold standard) but only 10 of the studies provided quantitative synthesis in ideal conditions. Their main conclusion was similarly cautious: “PPG-derived HRV [PRV] should not be regarded as universally interchangeable with ECG-derived HRV across all devices, populations, and recording contexts.” Factors Affecting HRV and PRV That gets me to the long list of factors that affect HRV (and PRV) besides the device, the type of measurement (RMSSD, SDNN or others), the person’s signal, the sensor site, the duration of data capture, if weighting by sleep stage is used, how artifact is processed and corrected. And this list is not complete!: Oura puts out data from their community of users (who input data) on what affects their overnight HRV. The factors currently provided are: no alcohol (increase 8%), melatonin (increase 2%, float tank (increase 2%), wine (decrease 4%), and party (decrease 14%) in overnight HRV. Must be some big parties! Subscribe What is a PRV measurement good for? It has been falsely characterized as an index of “autonomic balance” and a specific indicator of stress. A 2018 review of the studies available for HRV and its relationship to stress, not using any of the current wearables, found that stress can lower HRV. But so can many other factors. The non-specificity of the signal, indexed to the table above, is striking. Evidence from a UK Biobank study of over 46,000 participants with actual HRV looked at genetically predicted HRV, a genetic risk score, that failed to show the expected HRV-mortality link, indicating that _HRV is likely not causa_l, but rather a reflection of person’s physiologic state. A review of consumer wearable HRV data from 5 longitudinal studies showed that nighttime PRV was not associated with perceived stress, and surprisingly higher HRV, in the largest cohort (N=717 participants), was correlated with higher stress. An Oura ring cohort of 525 first-year college students found a link between overnight PRV and perceived stress, but that was also seen with resting heart rate, sleep, and respiratory rate. Several very small studies have examined the relationship of HRV and athletic injuries or guiding training with mixed, and predominantly negative results. HRV biofeedback training with paced breathing had no significant effect on reducing stress or raising HRV, as demonstrated with sham controlled trials. When HRV for multiple days showed a decline in conjunction with body temperature, the Oura ring published data for prediction of Covid. The WHOOP company sponsored an observational study, published in 2026, of 30,000 users for 72 weeks, without a control group, that reported reduced alcohol intake (5.8 % points) by self-report. That doesn’t tell us much, and particularly about the merits of HRV for behavioral change. If you use the same device and conditions as longitudinal trends for multiple (at least 2-3) weeks that may be the one way to get something useful from the measurements. Data for overnight sleep with minimal motion and using RMSSD is the best proxy for real HRV. The reason to look at trends rather than any given night is that it more likely represents something, even though you won’t know with certainty what the “it” is. Keep in mind there are no data, no peer-reviewed evidence, to show that HRV fluctuation in-person has any correlation with health outcomes. Share Readiness Scores These are proprietary scores that integrate different metrics for each of the wearables: no algorithms have been disclosed. They are unvalidated against health outcomes. In a review of 14 composite health scores of readiness and recovery, HRV contributed 86% to the scores, followed by reading heart rate (79%), physical activity and sleep duration (both at 71%). That review noted the substantial variability in measurement protools and lack of standardization. Sleep staging is notoriously inconsistent and inaccurate by these sensors, which adds further to the HRV uncertainties for what the scores, which use sleep stage data, mean. Only resting heart rate has been shown consistently across devices to be extremely accurate. I’ve made a Table to summarize what we know about which metrics are included, the scores, any peer-reviewed studies that compared the readiness score with health outcomes, and the corresponding (if any, NA-not available) citation. You will note that some companies do not use the term “readiness," such as WHOOP for recovery, and Garmin, which has 2 different scores, one of which is Body Battery. Eight Sleep uses the term “Fitness Score.” They all include HRV; Apple includes a new metric they call “Recovery HRV” which among other components uses 7-days of sleep, but it is unclear what this means or how it is differentiated from other scores (there are clearly no data for outcomes). We have no knowledge of how the different components are weighted or whether any of these scores are better than resting heart rate, HRV alone, physical activity, or any other single metric. Since none of these are standardized, they are not interchangeable, so if you get a 90 for Oura that has no relationship to a 90 on a Google Fitbit Air. Notably, the company can update its algorithm for readiness score at any point without notification to device users. Without any useful evidence of actionability for these scores or established relationship with health outcomes, it is hard to make a case for their value. At the Apple recent announcement they showed their Readiness score (0-10) on the watch (Figure below) but there are no published data on this score, not even on their website. It’s available only on their new Watch Series 12 or Ultra 4 [of course, ;-)]. That exemplifies the problems with these scores, lack of data and evidence for being meaningful to promote health. Perhaps the best study (which isn’t saying much) is the WHOOP Recovery for golfer performance, because it did correlate with an objective outcome, even though there was no control group and the authors were all from the company. Among the 389 pro golfers, an absolute 10-per cent point increase in Recovery score was associated with about 0.5 fewer strokes per round. But that’s hardly a health outcome! WHOOP is also conducting a study in over 2,700 runners to see if their recovery score will be linked to less injuries and improved performance, but that is not yet published and has no control group or randomization. Putting This in Context For two decades I’ve been enthusiastic about the potential for digital health and particularly wearable biosensors. Over the years, we’ve seen some great progress for their ability to promote physical activity and accurately detect atrial fibrillation (the first FDA cleared deep learning AI for consumers). That work was the subject of rigorous research. But there are holes in the data and evidence for other metrics. One notable one is the “VO2 max” story that I wrote about earlier this year. At that time many subscribers asked me to cover heart rate variability, which I finally got to here. When I dived into the research and publication for HRV and readiness scores, I expected to find at least some that were of high quality and demonstrated their utility by linkage to health outcomes. To my surprise, I found none. The wearable sensor measurements for HRV (PRV) are, for the most part, accurate, but that validation work has only been done in small studies of healthy adults and does not take into account the long list of factors, from the device, software side, and the user side, that affect HRV measurements. Moreover, this metric chiefly relies on optical sensing and, as we have learned for heart rate PPG sensing, may be less accurate in people of color. Keep in mind that all of the health outcome association evidence comes from ECG-derived HRV; none are from wearable sensor data. I will repeat the key point: there's no peer-reviewed evidence to show that in-person HRV fluctuation—or efforts to raise your HRV— has any correlation with health outcomes. For those of you who look at your HRV on awakening, or even 2+ week trends of it being low, I hope this context helps to relieve any anxiety. Yes, low HRV (not PRV) has been shown to increase risk of some diseases as summarized above. But efforts to raise your HRV—a surrogate metric— has not been established for improving any health outcomes. HRV does not have any evidence of causality (the genetic evidence actually goes against this possibility). In this summary, I have not included data for other wearable sensors such as Polar, Samsung, Withings, Suunto, Amazfit, Coros, Ultrahuman, or additional mattress sensors. These are beyond my first-hand experience, and as far as I know from my in-depth review none have any peer-reviewed published data that differ from the 6 sensors I’ve reviewed here. From the points I’ve gone over above, we’re not ready for readiness scores. Besides being proprietary, they are predominantly based on metrics that have their own issues. It’s compounding the problem, like building a house without a solid foundation that has never undergone a rigorous inspection, and then selling it. Like I mentioned for PRV, you can look at trends over weeks rather than any single day, to get a handle, but even that may not be helpful. There’s simply no evidence that these scores meaningfully relate to health outcomes. I’d emphasize they might, but that requires doing prospective or randomized studies to prove it. None exist. There’s great promise for HRV/PRV utility_. For example**,**_ Prof Maiken Nedergaard, who discovered the brain glymphatics that are essential in eliminating metabolic waste products from the brain during sleep, has posited that HRV could be a non-invasive marker for neuromodulator oscillations, brain-body regulatory circuits, and brain clearance. That would be extremely useful, but like everything else on HRV and readiness scores it requires solid research and validation. The lay media isn’t helping much to get the story straight. Earlier this year The Economist published a piece entitled “The most useful indicator of your overall health” which ordained HRV as an “accumulated stress score.” That’s akin to the false assertion about VO2max: “V02 max is the singular most powerful marker for longevity.” As I’ve summarized here, that is not established. The fact is that so many things can lower HRV, including physical exercise (especially an intense workout), reduced sleep quality, stress, the list above, no less the device, signal, and software. Whatever fluctuations observed have not been correlated with any health outcome. Sadly, “datamaxxers” are widely using HRV and readiness scores that have never been validated to mean anything. We already know that for some people using the sensors for sleep metrics, it can induce “orthosomnia,” an obsession to get high sleep quality, with associated high levels of anxiety. In an experiment done by a company to promote sleep quality for its employees, “For those employees who did use the trackers, many reported feeling perfectly rested until their tracker told them they had had a terrible night. Others were told that they had slept like a baby when they had actually been lying awake worrying about the quality of their sleep. “ The same problem can result from preoccupation with HRV or readiness scores, with anxiety that would lead to further reduction in both. It you are using a wearable like >100 million American adults, it’s OK to look at these data, but contextualized with the major caveats reviewed here. If you are one to require evidence that HRV or readiness scores are linked to health outcomes, you may not even want to look. The companies make it hard to turn them off! Let me end with the companies that make and sell wearables. Apple’s doubling down on HRV (24-fold more reporting and heart rate very 5 seconds) and introduction of a Readiness score tells us that consumers have bought into these metrics and they are joining the club. However, all of this is occurring with a backdrop of tens millions of users, claims about the data that are not backed up by adequate evidence, marketing way out in front of whatever limited data exists, and not being transparent about their readiness score algorithms. The companies can well afford to do the research that is needed to connect these metrics with health outcomes show, once and for all, that increasing HRV or using readiness scores promotes our health. If they believed and invested in the products they are selling, we’d not be in this position of not knowing. That’s essentially where we are with HRV and readiness scores. Perhaps someday this will change and we’ll have good reason to embrace them. NB: I wrote this post. No AI. I have no conflicts of interest with any of its content. Loading... Ground Truths has 215,000 subscribers from every US state and 214 countries. There are over 300,000 followers of Ground Truths so more than 90,000 folks who can easily convert to be free subscribers. Your subscription to these free essays and podcasts makes my work in putting them together worthwhile. If you’re not a subscriber, please join! If you found this interesting PLEASE share it! Share Ground Truths The proceeds from all voluntary paid subscriptions go to support our summer internship program. It enabled us to accept and support a record number of 62 summer interns that joined us in 2026! These are high school, college and medical students selected from thousands of applicants. We couldn’t do this expanded program without the funds coming in through Ground Truths. Thank you!
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