Short Wave

Listener Shabnam Khan has a problem: Every time she works in her garden, she’s visited by lizards and frogs. Shabnam has lived in the metro Atlanta area for decades, and she says this number of scaly, clammy visitors has exploded over the past few years. Frogs croak at night; lizards sun on the cement. And she wants to know, where did all of these animals come from? It turns out, there are a numbe...

There’s an ongoing, near-total blackout of the internet in Iran. The shutdown is part of a response by the government to ongoing protests against rising inflation and the value of the nation’s currency plummeting. Since protests began more than two weeks ago, only an estimated 3% of Iranians have stayed online through the satellite internet system Starlink. Doing so is a crime. So, today on the sh...

A new study shows penguins are breeding earlier than ever in the Antarctic Peninsula. This region is one of the fastest-warming areas of the world due to climate change, and penguins time their breeding period to environmental conditions. That’s everything from the temperature outside and whether there’s ice on the ground to what food is available. Changes in those conditions could contribute to m...

Cloud 9 is a failed galaxy. It’s a clump of dark matter, called a dark matter halo, that never formed stars. But this failure could be the key to a mystery almost as old as the universe itself: dark matter. Scientists don’t know what dark matter is, but Cloud 9 could offer new clues. Three researchers weigh in on this new discovery and why it could be a missing piece to the story on how the univer...

Medical drama The Pitt is winning Golden Globes… and health care workers’ hearts. Medical experts say the show, which chronicles a fictional Pittsburgh hospital emergency department, is perhaps the most medically accurate show that’s ever been created. But what about The Pitt makes it so accurate… and does the second season hold up as well as the first? Stanford Global Health Media Fellow (and fou...

In today's episode, host Emily Kwong leads us on a night hike in Patuxent River State Park in Maryland. Alongside a group of naturalists led by Serenella Linares, we'll meet a variety of species with unique survival quirks and wintertime adaptations. We'll search out lichen that change color under UV light and flip over a wet log to track a salamander keeping warm under wet leaves. Emily may even...

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 lig...

There’s this idea that something happens in the human brain when we turn 25. Suddenly, we can rent a car without fees. Make rational decisions. We may even regret some of our past… indiscretions. All because we’re developed…right? Well, a recent paper in the journal Nature suggests that may not be the case. Neuroscientists found four distinct turning points in brain development across the human li...

In the mid-1980s, scientists published a startling finding –a giant hole in the ozone layer over Antarctica. That’s the protective shield that blocks large amounts of harmful UV radiation. And without it, the rate of cancer, cataracts and crop failure would skyrocket. Today on the show, we dive into ozone science and examine how scientists successfully sounded the alarm and solved an Antarctic mys...

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 w...

Most astronomers agree that young galaxy clusters should be relatively cool compared to older ones. But researchers recently found a very young cluster that’s hotter than the surface of the sun. More on why the finding is so shocking, plus elephant’s remarkable sniffing abilities and a new discovery about butterfly migration in this episode of Short Wave .  Interested in more science news? Email u...

Healthy forests help combat climate change, provide humans with drinking water and even improve mental and physical health. But it’s hard to imagine an entire forest in the middle of a big city. That’s where micro-forests come into play — public forests on a smaller scale, filled with native plants. They exist around the world, and producer  Rachel Carlson  went to visit the largest micro-forest i...

What happens behind the scenes of a dinosaur exhibit? Short Wave host Regina Barber got to find out … by taking a trip to the Carnegie Museum of Natural History in Pittsburgh. In the museum’s basement, she talked to a paleobiologist, checked out a farmland fossil find and even touched a 67 million-year-old bone. Because, as it turns out, there’s a lot of science that can be found in a museum basem...

Choose your fighter for the origin of water on Earth! Was it always here or did it come to this planet from somewhere else in space? And, either way, what does this mean for other water worlds in our galaxy? To find out, we talk with Michael Wong , an astrobiologist and planetary scientist at Carnegie Science. He gets into scientists’ strongest candidates for the ways water could have come to our...

What better time to contemplate the conundrum that is zero than the start of a new year? Zero is a fairly new concept in human history and even more recent as a number. It wasn't until around the 7th century that zero was used as a number. That's when it showed up in the records of Indian mathematicians. Since then, zero has, at times, been met with some fear — at one point the city of Florence, I...

Science in the United States took some big hits this year. The Trump Administration disrupted federal funding for all kinds of scientific pursuits. Administration officials say those changes were a step towards reinvigorating federal agencies like the National Institutes of Health. But many scientists disagree. NPR health and science correspondents Rob Stein and Katia Riddle chat with host Emily K...

Gen Z and younger millennials are generally the most climate literate generations. As an age cohort that started learning about climate change in school, they're worried about how to plan for their future jobs, houses and, yes, kids. With climate-related disasters and global warming likely to worsen, climate anxiety is giving way to reproductive anxiety. So, what do experts say about how to naviga...

Kratom and 7-OH products are available in many smoke shops. But earlier this year, the FDA recommended certain 7-OH products be scheduled alongside opioids. This isn’t the first time kratom has come under scrutiny. Nearly a decade ago, the DEA wanted to make certain active ingredients in kratom controlled substances. Meaning products would go from being widely available to highly restricted. After...

Scientists in the Arctic are catching the exhaled breaths of whales to better understand their health. How? Drones. Whales breathe through their blowholes, which are the equivalent of nostrils on their heads. By studying the microbes in exhaled whale breaths, scientists are piecing together how deadly diseases spread in whale populations. Host Emily Kwong and producer Berly McCoy talk to All Thing...

Ever gotten a scarlet, hot face after drinking alcohol or know someone who has? Many people felt it as they celebrate the holidays with loved ones, sipping mulled wine, cocktails or champagne. That's because this condition, commonly called "Asian flush" or "Asian glow," affects an estimated half a billion people, who can't break down aldehyde toxins that build up in their bodies. But what if there...

Written by Jo Lambert, ‘Hold The Hope’ is now being used as suicide prevention training material by the UK’s National Health Service Mental Health Trust. Emily Kwong speaks with Rhitu Chatterjee about the inner strength of those who live with suicidality, how a song is opening up new conversations for mental health care, and how caregivers can help a person choose life, despite having persistent t...

Dogs are man’s best friend. And it’s no secret that we at Short Wave love cats (Regina has four)! Both of these iconic pets have been domesticated – evolved and adapted to live alongside humans – for millennia. And a recent study suggests that the common raccoon may be on its first steps towards joining them. So how do scientists look for signs of domestication and what do those signs mean? And co...

You may have heard of Ozempic, and other GLP-1 drugs. They’re everywhere. And they typically involve weekly injections — which can have a sticker price of over a thousand dollars a month. And insurance coverage has been tricky to navigate for a lot of people. That’s why there’s a lot of excitement around a new pill form of the drug. NPR Pharmaceuticals Correspondent Sydney Lupkin chats about these...

In November, the U.S. stopped production of the humble penny after 232 years in circulation. On today’s show, Darian Woods and Wailin Wong from NPR's daily economics podcast The Indicator unpack the fiscal math that doomed the penny, and an artist pay tribute to this American icon.  Follow the Indicator on Apple Podcasts or Spotify .  View more of  Robert Wechsler’s artwork here . Listen to every...

Many countries are frustrated with U.N. climate conferences. While some countries urgently want to transition away from fossil fuels — the main driver of global warming — others are blocking that language from climate agreements. Today on the show, Emily talks with  Julia Simon  from NPR’s climate desk. She takes us to Brazil and introduces us to a group of countries that are trying something new....