Category: ScienceNews

A rare visitor from another star system has been spotted: the interstellar comet 3I/ATLAS! It was detected July 1 by the NASA-funded Asteroid Terrestrial-impact Last Alert System, or ATLAS. Most known comets orbit the Sun and are bound by the gravity of the solar system ... but this object came from far beyond the pull of our Sun, traveling 137,000 miles per hour from another star. Now, scientists are racing to get a good image of it, in the hopes it can answer big questions like: What is the universe like where this comet is from? Is the solar system we live in unique?

Want us to cover more space news? Tell us by emailing shortwave@npr.org! We'd love to know what you want to hear from us.

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.

Learn more about sponsor message choices: podcastchoices.com/adchoices

NPR Privacy Policy

The European Space Agency plans to use satellite gravity data to track weakening ocean circulation systems. Rory Bingham of the University of Bristol explains how these satellites can ‘weigh’ the Earth’s water and might help resolve whether we’re approaching the climate tipping point of a shutdown of ocean circulation in the Atlantic Ocean, something we've been following for a while.

Scientists have been able to retrieve ancient proteins from fossilized tooth enamel in the Canadian High Arctic. Ryan Sinclair Paterson from the University of Copenhagen tells us how he can fill in the blanks of the molecular tree of life with these proteins from over 20 million years ago.

A few weeks ago, we discussed evidence of an impact of a massive crater in northwestern Australia from over 3 billion years ago. However, recent independent evidence from another team of geologists indicate that the size and age of this crater’s impact may not be what some had previously thought. Alec Brenner of Yale University talks us through his analysis of the geologic evidence.

Finally, we rediscover a forgotten pioneer of fusion science. Mark Cavendish discusses the research done by then-graduate student Arthur Ruhlig that helped develop the hydrogen bomb and thermonuclear physics.

Presenter: Roland Pease Producers: Imaan Moin with Alex Mansfield Production Coordinator: Jana Bennett-Holesworth

(Image: Map of North Atlantic Ocean currents, with Gulf Stream and other currents. Credit: PeterHermesFurian Via Getty Images.)

This week marks the 100th anniversary of the Scopes "Monkey Trial" — where a teacher was charged with the crime of teaching Darwin's theory of evolution by natural selection. At the time, it was illegal in Tennessee to "teach any theory that denies the story of the Divine Creation of man as taught in the Bible, and to teach instead that man has descended from a lower order of animals." The trial, which was orchestrated to be a media spectacle, foreshadowed the cultural divisions that continue today and led to a backlash against proponents of evolution.

Read more of science correspondent Nell Greenfieldboyce's reporting on the story.

Want us to cover more science history? Less? Either way, tell us by emailing shortwave@npr.org! We'd love to know what you're hearing — and want to hear from us!

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.

Learn more about sponsor message choices: podcastchoices.com/adchoices

NPR Privacy Policy

Short Wave producer Hannah Chinn has adult-onset eczema. They're not the only one. Up to ten percent of people in the United States have it, according to the National Eczema Association — and its prevalence is increasing. Despite its ubiquity, a lot about this skin condition remains a mystery.
So today, Hannah's getting answers. In this encore episode, they sat down with Raj Fadadu, a dermatologist at the University of California, San Diego, to ask: What is eczema? What triggers it in the first place? And might climate change make it worse sometimes?

If you liked this episode, check out our episode on the science of itchiness. Also, follow us! That way you never miss another episode.

Interested in hearing more about climate change and human health? Email us at shortwave@npr.org — we'd love to hear your feedback!

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.

Learn more about sponsor message choices: podcastchoices.com/adchoices

NPR Privacy Policy

A warming climate doesn't just affect dry land — it affects the ocean, too. For years, Earth's ocean has acted as a heat sink for climate change: A large part of the heat generated by human use of fossil fuels is being absorbed by the ocean. And while the deep sea is largely unaffected by this heat absorption, oceanographers have discovered that the upper ocean currents are accelerating. That acceleration has the potential for huge knock-on effects, including sea level rise, changing fish migration cycles, shifting storm patterns, and more.

This is the first episode of Sea Camp, Short Wave's summer series exploring the intriguing and otherworldly depths of the ocean. Follow us every Monday through August as we travel from the sunlit zone to the sea floor.

Interested in more stories about the ocean? 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.

Learn more about sponsor message choices: podcastchoices.com/adchoices

NPR Privacy Policy

The 2015 Paris agreement’s goal of limiting global warming to 1.5 degrees Celsius was thought to be the threshold for averting severe climate change impacts. But new research says even that level is too high to prevent the catastrophic consequences of sea level rise due to melting glaciers. John Yang speaks with Chris Stokes, one of the study’s authors, to learn more. PBS News is supported by - https://www.pbs.org/newshour/about/funders

President Donald Trump went to Iowa on Thursday to start the countdown to the nation’s 250th Independence Day next year. To mark the anniversary, the nonpartisan Center for the Study of the Presidency and Congress is looking at 250 years of U.S. innovation. John Yang speaks with Glenn Nye, the center’s president and CEO, about the project. PBS News is supported by - https://www.pbs.org/newshour/about/funders

Listener Dickson Mukisa from Uganda has been gazing up at the stars. But he’s not making wishes. He wants to know whether we can harness their energy, in the same way we do with our OWN star – the sun. After all, they may seem small and twinkly to us, but each one is a gigantic flaming ball of energy, with a power outputs averaging around 40 quadrillion kilowatt-hours per year – EACH! With somewhere between 100 and 400 BILLION stars in our own galaxy alone, that’s a lot of power! Can we get ‘solar power’ from stars that are such a long way away from earth? And what might we use it for?

Alex Lathbridge heads to the University College London Observatory, to peer through the eyepiece of an enormous telescope and see some stars for himself. Professor Steve Fossey explains just how much of the light energy of the stars reaches us on earth. In other words, how BRIGHT they are.

Once the starlight reaches earth of course, we have to capture it. Could traditional solar panels do the job? Alex meets Professor Henry Snaith from the University of Oxford, to find out about the future of photovoltaic technology, and why it could all be heading out to space.

Once in space, things start getting weird! What if we made an enormous fleet of solar panels, and put them all into orbit around a star, soaking up every last drop of that precious energy? That might sound like science fiction, but the idea has been around for decades. It’s called a Dyson Sphere, or Dyson Swarm. Swedish researcher at the Insitute for Future Studies, Anders Sandberg explains how we might be able to build one around a neighbouring star... in around 10,000 years or so.

But maybe it’s not all about light. Finally, Alex explores the mysterious, invisible energy of the ‘solar wind’, with Pekka Janhunen, Finnish physicist and inventor of the “E-Sail”, which might be able to harness the power of the stellar wind, too.

Presenter: Alex Lathbridge Producer: Emily Knight Series Producer: Ben Motley

(Image: Astronomer looking at the starry skies with a telescope. Credit: m-gucci via Getty Images)

The X-Press Pearl shipping disaster takes us on a voyage through shipping-related science.

First, we learn about how pollution from the X-Press Pearl explosion impacted the foundation of the marine food web – plankton. We also hear about an innovative system that can help slash the shipping industry’s greenhouse gas emissions.

And we take a short trip in a time-machine back to the Stone Age, where biological anthropologist Professor Yousuke Kaifu from the University of Tokyo explains what it takes to recreate a Palaeolithic voyage from Taiwan to the Ryukyu Archipelago.

We also look at how artificial intelligence could help Canadian caribou cross sea ice, the science of lightning and thunder, and the tricky disputes around shipwrecks and treasure.

All that, plus many more Unexpected Elements.     Presenter: Marnie Chesterton, with Meral Jamal and Godfred Boafo Producer: Alice Lipscombe-Southwell, Minnie Harrop and Imaan Moin

Happy Independence Day, Short Wavers! Do you have plans outdoors this weekend and want to figure out just how swampy it's gonna feel? For that kind of mental preparation, we're revisiting an episode in which some meteorologists are telling us to pay more attention to dew point temperature, not relative humidity.

Interested in more weather episodes? 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.

Learn more about sponsor message choices: podcastchoices.com/adchoices

NPR Privacy Policy