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One of Earth’s most abundant lifeforms has a fatal flaw
SAR11 bacteria dominate the world’s oceans by being incredibly efficient, shedding genes to survive in nutrient-poor waters. But that extreme streamlining appears to backfire when conditions change. Under stress, many cells keep copying their DNA without dividing, creating abnormal cells that grow large and die. This vulnerability may explain why SAR11 populations drop during phytoplankton blooms and could become more important as oceans grow less stable.
Scientists discover how to turn gut bacteria into anti-aging factories
Researchers found that small doses of an antibiotic can coax gut bacteria into producing a life-extending compound. In worms, this led to longer lifespans, while mice showed healthier cholesterol and insulin changes. Because the drug stays in the gut, it avoids toxic side effects. The study points to a new way of promoting health by targeting microbes rather than the body itself.
This Week in Science: Meat-Eater Longevity, Space Viruses, And More!
Our weekly science news roundup.
January 30, 2026
A flu variant called subclade K emerged too late to be fully covered by this year’s vaccine. But the flu shot can still help protect you. Plus, a new study suggests dogs began to diversify about 11,000 years earlier than we thought. And, in turbulent times, it helps to hear stories of resilience. What can we learn from 3.5 billion-year-old bacteria that eat light?
Scientists Discover Living Bacteria Hidden Inside the #1 Type of Kidney Stone
Scientists have uncovered an unexpected biological factor hidden within the most common type of kidney stone.
The World’s Largest Biological Battle Is Being Fought in Space
But this evolutionary “arms race” looks a little different when playing out in microgravity.
Legionella detected in North Oakland Health Center and the Resource and Crisis Center in Oakland County
Oakland County is taking proactive measures after routine water testing detected Legionella bacteria at the North Oakland Health Center (NOHC) and the Resource and Crisis Center (RCC).
Scientists call for urgent action as dangerous amoebas spread globally
Scientists are warning that a little-known group of microbes called free-living amoebae may pose a growing global health threat. Found in soil and water, some species can survive extreme heat, chlorine, and even modern water systems—conditions that kill most germs. One infamous example, the “brain-eating amoeba,” can cause deadly infections after contaminated water enters the nose. Even more concerning, these amoebae can act as hiding places for dangerous bacteria and viruses, helping them evade disinfection and spread.
Welcome to post-Darwinism: AI fires silver bullet for creating new life
In a breakthrough experiment, molecular biologists and tech entrepreneurs have teamed up to write the genetic code of a virus that destroys killer bacteria
Powdered Whole Milk Could Be a Culprit in the ByHeart Botulism Outbreak, Tests Show
Powdered whole milk used to make ByHeart infant formula could be a source of contamination that led to an outbreak of botulism that has sickened dozens of babies, U.S. health officials indicated Friday. Testing by the U.S. Food and Drug Administration found the type of bacteria that can cause the ...
Exhaled breath may carry clues to gut microbiome health
The human gut is home to trillions of beneficial microbes that play a crucial role in health. Disruptions in this delicate community of bacteria and viruses—called the gut microbiome—have been linked ...
Tiny doses of THC show big benefits for HIV treatment
A new study suggests that micro-doses of THC could help counter many long-term side effects of HIV treatment without causing intoxication. In animal models, low-dose THC reduced inflammation, improved gut bacteria, boosted serotonin, and lowered harmful cholesterol and bile acids. Surprisingly, it also reduced circulating levels of antiretroviral drugs while maintaining viral suppression, potentially protecting the liver. Scientists say the results point to a promising new approach for managing chronic complications of HIV.
Scientists discover why some wounds refuse to heal
Scientists have uncovered a surprising reason why some chronic wounds refuse to heal, even when treated with antibiotics. A common bacterium found in long-lasting wounds does not just resist drugs. It actively releases damaging molecules that overwhelm skin cells and stop them from repairing tissue. Researchers discovered that neutralizing these harmful molecules with antioxidants allows skin cells to recover and restart healing.
Viruses that evolved on the space station and were sent back to Earth were more effective at killing bacteria
Near-weightless conditions can mutate genes and alter the physical structures of bacteria and phages, disrupting their normal interactions in ways that could help us treat drug-resistant infections.
Scientists sent viruses to space and they evolved in surprising ways
When scientists sent bacteria-infecting viruses to the International Space Station, the microbes did not behave the same way they do on Earth. In microgravity, infections still occurred, but both viruses and bacteria evolved differently over time. Genetic changes emerged that altered how viruses attach to bacteria and how bacteria defend themselves. The findings could help improve phage therapies against drug-resistant infections.
Dangerous bacterial outbreak in Bay Area city sparks health alert
"People may delay seeking medical care because it doesn't feel serious at first."
Despite concerns, Oakland Co. health says Legionella response adequate
Oakland County health and facilities officials argue their timeline for testing county facilities for bacteria that causes Legionnaires' Disease was adequate in response concerns from a commissioner who put them under the microscope at a Tuesday committee meeting.
Scientists find a natural sunscreen hidden in hot springs bacteria
Researchers studying cyanobacteria from hot springs in Thailand have discovered a new natural UV-blocking compound with impressive antioxidant power. Unlike conventional sunscreens, it’s biocompatible and potentially safer for both people and the environment. The molecule is produced only under UV and salt stress and uses a unique biosynthetic pathway never seen before. This could help drive a new generation of eco-friendly sunscreens and skincare products.
This new sugar tastes like the real thing without the usual downsides
Scientists at Tufts have found a way to turn common glucose into a rare sugar that tastes almost exactly like table sugar—but with far fewer downsides. Using engineered bacteria as microscopic factories, the team can now produce tagatose efficiently and cheaply, achieving yields far higher than current methods. Tagatose delivers nearly the same sweetness as sugar with significantly fewer calories, minimal impact on blood sugar, and even potential benefits for oral and gut health.
Recall of cheese products upgraded to highest danger level over Listeria-causing bacteria: FDA
The FDA announced that a recall of cheese products has been upgraded to the most serious risk category after testing positive for Listeria monocytogenes.
Scientists warn of a new biological risk and call for an international summit
Paris summit warns about “mirror life.” Scientists call for early limits on mirror bacteria that could evade defenses and disrupt ecosystems.
Lee County health officials warn of intestinal bacteria in the water at Lynn Hall Memorial Beach
Water-quality testing in Southwest Florida occasionally reports high concentrations of enterococcus bacteria, which are found inside the intestinal tracts of humans and animals, similar to the spike in the bacteria discovered off Fort Myers Beach this week.
Why your gut microbiome is so important for health and how to protect it
Bacteria in the gut perform important jobs that help prevent disease, but how to best protect and improve yours? An expert weighs in.
New Jersey health officials report state's 1st pediatric flu death of the season
The New Jersey Department of Health says the child is under 5 years old and was from the northern part of the state, and had no underlying health problems.
NASA discovered 26 microbes in their cleanrooms
The bacteria could contaminate space
Everyday chemicals are quietly damaging beneficial gut bacteria
A large study has revealed that dozens of widely used chemicals can damage beneficial gut bacteria. Many of these substances, found in pesticides and everyday industrial products, were never thought to affect living organisms at all. When gut bacteria are stressed by these chemicals, some may also become resistant to antibiotics. The research raises new questions about how chemical exposure could be influencing human health behind the scenes.
The invisible microbes that help keep us healthy
Not all microbes are villains—many are vital to keeping us healthy. Researchers have created a world-first database that tracks beneficial bacteria and natural compounds linked to immune strength, stress reduction, and resilience. The findings challenge the long-standing obsession with germs as threats and instead highlight the hidden health benefits of biodiversity. This shift could influence everything from urban design to environmental restoration.
Rare flesh-eating infection leaves Montgomery County business owner in the hospital
A Montgomery County business owner is continuing to recover in the hospital after being diagnosed with a rare flesh-eating bacterial infection.
Great Green Wall 2.0: China is geoengineering deserts with blue-green algae
Scientists aim to reclaim thousands of hectares of desert using cyanobacteria that can stabilise sand and create foundation for plant growth.
'Stop and re-check everything': Scientists discover 26 new bacterial species in NASA's cleanrooms
Scientists discover 26 new bacterial species in NASA cleanrooms, revealing surprisingly resilient microbes with potential uses in biotechnology and medicine.
Your roommate’s genes may be shaping your gut bacteria
Scientists studying thousands of rats discovered that gut bacteria are shaped by both personal genetics and the genetics of social partners. Some genes promote certain microbes that can spread between individuals living together. When researchers accounted for this social sharing, genetic influence on the microbiome turned out to be much stronger than previously thought. The study suggests genes can affect others indirectly, without DNA ever being exchanged.
Sugar-free sweeteners may still be harming your liver
Sorbitol, a popular sugar-free sweetener, may not be as harmless as its label suggests. Researchers found it can be turned into fructose in the liver, triggering effects similar to regular sugar. Gut bacteria can neutralize some of it—but too much sorbitol or glucose can overwhelm that defense. The result: yet another “healthy” sweetener that may stress the liver.
What your mouth can reveal about your health
Scientists are discovering that the oral microbiome—home to hundreds of species of bacteria and fungi—may help predict everything from cancer risk to heart and brain health.
This giant microbe organizes its DNA in a surprising way
3-D microscopy shows that the giant bacterium Thiovulum imperiosus squeezes its DNA into peripheral pouches, not a central mass like typical bacteria.
We may finally know what a healthy gut microbiome looks like
Our gut microbiome has a huge influence on our overall health, but we haven't been clear on the specific bacteria with good versus bad effects. Now, a study of more than 34,000 people is shedding light on what a healthy gut microbiome actually consists of
For Real, a Natural History of Misinformation
It’s not just humans who suffer from leading one another astray. So do fish, flies and even bacteria.
The Truth About Airplane and Hospital Air, According to Science
There’s a certain logic in thinking that the air in a hospital or airplane is filthy, teeming with viruses, bacteria, and whatnot...
Gym tied to outbreak of obscure disease that spreads through mist
The outbreak blamed on "gym exposure" is relatively small, but it has helped push cases tied to the Legionella bacteria to a 10-year high in Florida.
UNC researchers uncover wildfire smoke’s health impacts
Inhaling wood smoke can upset the natural balance of bacteria in the lungs and contribute to diseases like asthma.
Are university policies holding science back? Study shows how patenting boosts pure research
When UC Berkeley biochemist Jennifer Doudna first began studying how bacteria fight virus infections, she had no idea it would result in one of the most important scientific breakthroughs of the century. ...