Short Wave

Climbing enthusiast and producer Thomas Lu has long wondered what makes knots such a powerful tool. Today, Thomas digs into the research with the help of Matt Berry , Quality Assurance Manager at the outdoor gear company Black Diamond Equipment, and researcher Vishal Patil . Reach the show by emailing shortwave@npr.org . See pcm.adswizz.com for information about our collection and use of personal...

Probes to Uranus and to one of Jupiter's moons where conditions might support life; a better plan high-quality science on the moon--those are some of the recommendations in a new 700 page report to NASA. NPR science correspondent Nell Greenfieldboyce has looked at that report and talked to the experts. Today, she sifts through all the juicy details of where NASA is headed the next few decades. Rea...

COVID cases are up due to the Omicron sub-variants and masking is likely to remain optional as the courts wrangle with the transportation mask mandate that a Federal judge struck down last week. NPR correspondent Allison Aubrey talks about both of these issues with host Emily Kwong, and updates listeners on what to expect with children and the vaccine. See pcm.adswizz.com for information about our...

Cryptocurrencies may exist only in the virtual world, but their impact on our natural resources is huge. That's largely because the technology underpinning crypto is an energy vampire that devours more electricity than do many countries. But that's only part of the story. Short Wave Host Aaron Scott talks to Producer Eva Tesfaye about the many environmental impacts of crypto - beyond its strain on...

As cryptocurrencies become increasingly popular, the environmental impact of the technology is gaining more attention. Local, state and national governments are trying to figure out how to regulate the massive amounts of energy that some cryptocurrencies consume. Short Wave host Aaron Scott and producer Eva Tesfaye are joined by Planet Money reporter Alexi Horowitz-Ghazi who unpacks what cryptocur...

Dr. Jessica Hernandez 's new book examines the role of displacement — Indigenous peoples like her father, who was displaced by the civil war in El Salvador, and plants like the banana tree, brought from Asia to Central America — in science. Jessica, an environmental scientist, talks with Emily about how important it is to make sure that Indigenous people and their knowledge are centered as humans...

The United States has a goal of net-zero carbon emissions by 2050. Without serious changes to lifestyles, that means dramatic investments in green energy. But environmental laws can actually get in the way. Today, our colleagues at NPR's daily economics podcast, The Indicator from Planet Money , compare the threats to two bats on opposite ends of the planet. The bats show the tension between local...

In the cannabis industry, the chemistry lab meets agriculture. A cannabis product called Delta-8 has been popping up in smoke shops, CBD shops and even gas stations. Dr. Katelyn Kesheimer , a researcher at Auburn University and the Alabama Cooperative Extension System, joins the show to demystify Delta-8. In this encore episode, we'll learn what it's made of, where it comes from, why it's so popul...

Salt has such a rich history that it was once (and is perhaps still) a sign of wealth. In this latest installment of our series on flavor and taste, "Taste Buddies," Scientist-in-Residence Regina G. Barber goes on a salty flavor journey with scientist Julie Yu . Along the way, Julie explains salt's essential role in our daily lives and how it affects our perception of food. Follow Regina on Twitte...

A recent study found that working surge after surge in the pandemic, a majority of American health care workers experienced psychiatric symptoms — including depression and thoughts of suicide. And yet, mental health correspondent Rhitu Chatterjee found that very few got help for these symptoms. If you or someone you know may be considering suicide, call the National Suicide Prevention Lifeline at...

Climate change poses an existential threat to the ski industry. A warmer climate means less snow and less now menas a shorter season for snowboarders and skiiers. NPR correspondent Kirk Siegler first covered the issue 15 years ago as local station reporter in Aspen. Now he returns to that world-renowned destination and tells Short Wave co-host Aaron Scott about one resort's efforts to push the nat...

Ranalda Tsosie grew up in the Navajo Nation, close to a number of abandoned uranium mines. The uranium from those mines leached into the groundwater, contaminating some of the unregulated wells that Ranalda and many others relied on for cooking, cleaning and drinking water. Today on the show, Ranalda talks to host Aaron Scott about her path to becoming an environmental chemist to study the extent...

In the northern Ukrainian city of Chernihiv at least half a dozen hospitals have been damaged by Russian attacks. The Emergency Department of City Hospital No. 2, located on the ground floor, was instantly destroyed. In addition, the shock wave shattered windows across all nine floors of the building, showering everything with broken glass. Correspondent Ari Daniel talks to Emily about the attack...

Today we share the mic with our colleagues at Planet Money to talk about one of our favorite aquatic creatures: manatees. Decades ago, manatees nearly went extinct as their habitat dwindled and boats threatened their lives. But power companies noticed something: manatees were hanging out near their power plants, seeking out warm water. So, the power companies teamed up with environmentalists to tu...

There's a lot for scientists to learn about the origins of humans' musical abilities. In the last few years, though, they've discovered homo sapiens have some company in our ability to make musical rhythm. Producer Berly McCoy brings the story of singing lemurs to host Aaron Scott. She explains how their harmonies could help answer questions about the beginnings of our own musical abilities, and w...

According to the World Health Organization, Ukraine has the fourth highest incidence of tuberculosis in Europe — and one of the highest rates of multidrug resistant TB anywhere in the world. The country had been making progress but then came the pandemic, and now the war. Reporter Ari Daniel says doctors worry about increased spread of this contagious and deadly disease. See pcm.adswizz.com for in...

A Japanese chemist identified umami in the early 1900s, but it took a century for his work to be translated into English. Short Wave host Emily Kwong talks with producer Chloee Weiner about why it took so long for umami to be recognized as the fifth taste. See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship prefer...

Today, we present an episode of NPR's daily economics podcast, The Indicator from Planet Money. It's filled with one of our favorite topics: Data. Algorithms are the secret sauce for many tech platforms. With user data, they can help a company tailor a subscriber's experience and make the product better. But what happens when the data that feeds an algorithm is obtained through less than legal mea...

This week, U.S. Food and Drug Administration vaccine advisors will meet to discuss long-term COVID vaccine strategy. This follows the recent FDA authorization and CDC recommendation of a second booster available for people 50 and older and some immunocompromised people. Going forward, will the strategy change from counting boosters to making a COVID vaccine a seasonal shot? Allison Aubrey talks to...

For many of us, seeing stars in the night sky is challenging because of light pollution. But there are some communities that are trying to change that. Today on the show, we visit cultural astronomer Danielle Adams in the world's first international dark sky city. Theoretical physicist Chanda Prescod-Weinstein also joins us to explain why access to dark night skies is so important. See pcm.adswizz...

Octopuses! They are escape artists, they camouflage in all kinds of surroundings, and they are incredibly intelligent creatures--and that intelligence evolved completely separately from humans'. That separate evolution makes them the perfect animal to study for Dominic Sivitilli , a PhD candidate in astrobiology and behavioral neuroscience at the University of Washington. Short Wave co-host Aaron...

Shall we play a game - of Wiffle ball ? Invented in 1953, this lightweight alternative to a baseball is perfectly suited for back yard romping. Today we explain why the design of the Wiffle ball guarantees that you don't need a strong arm to throw a variety of pitches. More about Jenn Stroud Rossmann's work on Wiffle Balls here: https://www.theatlantic.com/technology/archive/2017/09/wiffle-ball-ph...

When a team of exoplanetary treasure hunters joined forces with professional astronomers, they discovered a whole new world. Short Wave host Emily Kwong talks with astronomer Paul Dalba and community scientist Tom Jacobs about how their collaboration led to the recent observation of a new Jupiter-like exoplanet. See pcm.adswizz.com for information about our collection and use of personal data for...

This month, the U.S. Senate unanimously approved a bill to make daylight saving time permanent. Now sleep scientists are weighing in and are suggesting the opposite — that standard time might be a better choice. Correspondent Allison Aubrey talks to host Emily Kwong about the pros and cons of adopting permanent daylight saving time or year-round standard time. You can follow Emily on Twitter @Emil...

The benefits of indoor air quality in schools are substantial, but American school buildings are old and many face major challenges when it comes to upgrades. Science and health correspondent Maria Godoy talks to host Aaron Scott about how there are a few hopeful signs that indoor air quality in schools will be improved- including some federal money and a new awareness of air quality because of th...