Episode (160)
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Overheard Season 3
Jun 10, 2020Smuggled dinosaur bones. Man-made glaciers. An audacious quest to find the world's southernmost tree. Each week, we'll dive into one of the curiously delightful conversations we've overheard around Na...
The Virus Hunter
Apr 28, 2020Coronaviruses aren't new. For more than 20 years, German virologist Rolf Hilgenfeld has been looking for ways to slow or stop the virus. What does it take to find a treatment for coronaviruses, and wh...
The Frozen Zoo
Dec 10, 2019Right now, one million animal and plant species are threatened with extinction. Conservation scientists are doing whatever they can to save them, or at least of piece of them. For the last 45 years, a...
If These Walls Could Talk
Nov 26, 2019Social Media is not just for modern folk. In ancient Pompeii, people also shared what they thought, who they met with, what they ate... It's just, they had to use different technology. For more inform...
The Aquarius Project
Nov 19, 2019A fireball from outer space crashed into one of Earth's biggest lakes. Scientists didn't know how to find it. So, they called in just the right people for the job -- an actor and a bunch of teenagers....
March of the Beaver
Nov 12, 2019The desolate Alaskan tundra - a landscape that has literally been frozen solid for thousands of years - is suddenly caving in on itself. Colonizing beavers are engineering new wetlands that thaw the s...
Cave of the Jaguar God
Nov 05, 2019Crawl into the Maya underworld, where science meets spirits, shamans, and snakes. A long-forgotten cave could shed light on one of history's most enduring questions: why did the ancient Maya collapse?...
The Hidden Cost of the Perfect Selfie
Oct 29, 2019What do tigers, sloths, elephants and bears have in common? They're all part of the incredibly lucrative captive wildlife tourism industry. Travelers from around the world clamor for opportunities to ...
The Alien Underground
Oct 22, 2019Half a mile below the surface of the earth, in a cave too hot to explore without an ice-packed suit, NASA scientist and Nat Geo explorer Penny Boston clambers around glassy crystals that are taller th...
Digging Up Disaster
Oct 15, 2019How did an ancient Roman harbor end up in ruins? Scientists realized the culprit was a long-forgotten natural disaster that left tell-tale geological clues -- and possibly an eyewitness account in an ...