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How did these flowers evolve to survive a megadrought?
A multi-year megadrought in the Western U.S. has claimed untold populations of wild plants. Amid the conditions, some have survived. Scientists have produced a stunningly complete picture about how populations of one particular flower – the scarlet monkeyflower – made it through. In a new study published in the journal Science, a team of scientists spent decades studying and sampling select populations of scarlet monkeyflowers in California and Oregon. Through genetic sequencing, the team discovered that the populations that did best went through genetic changes in a short time period. This is known as rapid evolution. The team found that three of the populations that recovered the BEST adapted their stomata to open less, so they could conserve more water. Stomata act like a plant’s pores, managing gas exchange and water loss. This allowed the scarlet monkeyflowers to hunker down in the drought and survive. Interested in more stories about rapid evolution? Email us your question at shortwave@npr.org.Listen to every episode of Short Wave sponsor-free and support our work at NPR by signing up for Short Wave+ at plus.npr.org/shortwave.Listen to Short Wave on Spotify and Apple Podcasts.This episode was produced by Jeffrey Pierre, Rachel Carlson and Hannah Chinn. It was edited by Christopher Intagliata and Rebecca Ramirez. Aru Nair checked the facts. The audio engineers were Becky Brown and Robert Rodriguez.
The sludge in your shower drain? That could be scientists’ next big find : Short Wave
Microbes are little alchemists that perform all manner of chemical reactions. A team of microbiologists co-founded a non-profit to try to harness those abilities to solve some of the world’s big problems — from carbon capture to helping coral reefs to cleaning up waste. Recently, the team turned their attention to the microbes living in people’s homes — on and in shower heads, drip pans, and hot water heaters. These rather extreme environments may have pressured microorganisms into surviving in ways that could be advantageous to humans. Science reporter Ari Daniel takes us on a treasure hunt in miniature.This episode was produced by Hannah Chinn. It was edited by Rebecca Ramirez. Tyler Jones checked the facts. The audio engineer was Robert Rodriguez.Interested in learning more about the weird and wonderful world of microbes? Email us your question at shortwave@npr.org.Listen to every episode of Short Wave sponsor-free and support our work at NPR by signing up for Short Wave+ at plus.npr.org/shortwave.
It’s my tree. Why can’t I cut it down?
Can the government stop you from cutting down your own tree? In many towns and cities these days, removing a tree now requires a permit. You might have to pay a fee, or promise to plant replacement trees. But sometimes, the city won't let you cut down the tree at all, even a tree in your own backyard.That's because trees are important for air quality, for flood control, and for public health. They help keep neighborhoods cool on hot days. But some think that tree protection laws have gone too far — that they might even be unconstitutional.On today's episode, it's the latest showdown between property rights and local zoning laws. Typically, towns and cities enjoy a lot of power when it comes to zoning and permits. They can ban certain types of buildings. They can make you paint your house a certain color. But can they make it illegal to cut down a tree? And what does it mean to "own" a piece of property anyway?Support:Planet Money+Read: Our book: Planet Money: A Guide to the Economic Forces That Shape Your Life Our weekly longform Planet Money newsletterOur weekly Indicator round-up newsletterFollow: InstagramTikTokYouTubeFacebookThis episode of Planet Money was hosted by Jeff Guo and Amanda Aronczyk. It was produced by James Sneed and Emma Peaslee, edited by Jess Jiang, and fact-checked by Vito Emanuel. It was engineered by Robert Rodriguez and Cena Loffredo. Alex Goldmark is our executive producer.
The sludge in your shower drain? That could be scientists’ next big find : Short Wave
Microbes are little alchemists that perform all manner of chemical reactions. A team of microbiologists co-founded a non-profit to try to harness those abilities to solve some of the world’s big problems — from carbon capture to helping coral reefs to cleaning up waste. Recently, the team turned their attention to the microbes living in people’s homes — on and in shower heads, drip pans, and hot water heaters. These rather extreme environments may have pressured microorganisms into surviving in ways that could be advantageous to humans. Science reporter Ari Daniel takes us on a treasure hunt in miniature.This episode was produced by Hannah Chinn. It was edited by Rebecca Ramirez. Tyler Jones checked the facts. The audio engineer was Robert Rodriguez.Interested in learning more about the weird and wonderful world of microbes? Email us your question at shortwave@npr.org.Listen to every episode of Short Wave sponsor-free and support our work at NPR by signing up for Short Wave+ at plus.npr.org/shortwave.
How scientists predict big winter storms : Short Wave
This past weekend, Winter Storm Fern struck the States. Sleet, snow and ice battered Americans all the way from New Mexico to New York. Scientists predicted its arrival in mid-January, and in anticipation of the storm, more than 20 state governors issued emergency declarations. But how did scientists know so much, so early, about the approaching storm? NPR climate reporter Rebecca Hersher says it has to do with our weather models… and the data we put into them. Which begs the question: Will we continue to invest in them?Interested in more science behind the weather? Check out our episodes on better storm prediction in the tropics and how the Santa Ana winds impact the fire season this time of year. Have a question we haven’t covered? Email us at shortwave@npr.org. We’d love to consider it for a future episode! Listen to every episode of Short Wave sponsor-free and support our work at NPR by signing up for Short Wave+ at plus.npr.org/shortwave.This episode was produced by Hannah Chinn. It was edited by our showrunner Rebecca Ramirez. Tyler Jones and Rebecca Hersher checked the facts. The audio engineer was Robert Rodriguez. News clips were from CBS Boston, Fox Weather, Fox 4 Dallas-Fort Worth, and PBS Newshour.
10 breakthrough technologies to expect in 2026 : Short Wave
Wanna know where tech is headed this year? MIT Technology Review has answers. They compile an annual list called "10 Breakthrough Technologies". Today, host Regina G. Barber speaks with executive editor Amy Nordrum about the list, and they get into everything from commercial space stations and base-edited babies to batteries that could make electric vehicles even more green. We also do a lightning round of honorable mentions you won't want to miss out on!Check out the full list from MIT Technology Review.Interested in more science? Check out our episode on last year’s top 10 technologies to watch and our episode on building structures in space.Email us your questions at shortwave@npr.org.Listen to every episode of Short Wave sponsor-free and support our work at NPR by signing up for Short Wave+ at plus.npr.org/shortwave.This episode was produced by Berly McCoy. It was edited and fact-checked by Rebecca Ramirez. The audio engineer was Robert Rodriguez.
Colorado lawmakers advance rewrite of 2024 law to regulate artificial intelligence
With just nine days left in the 2026 legislative session, a revised proposal to amend the 2024 artificial‑intelligence law is finally advancing — even though it’s not the bill Senate Majority Leader Robert Rodriguez had hoped for. Senate Bill 189, which largely mirrors a draft bill written by a governor-appointed task force, was introduced in […]