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Hundreds of thousands of years ago, deep in the mountains of the Yukon, a ground squirrel pooped. That scat stayed frozen for millenia—until very recently, when researchers thawed it out and realized it was a literal data dump. They found traces of a surprising number of animals and plants, providing a detailed snapshot of life during the last ice age. Flora talks with biomolecular archaeologist Tyler Murchie about the gold mine that is ancient squirrel poop.
And, if you liked our poop jokes, you’ll want to hear how two different types of laughter are processed in the brain. Think big belly laughs versus polite chuckles in conversation. Ira chats with neuroscientist Sophie Scott about how these laughs originate and why we need them both.
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Segment Guests
Tyler Murchie
Dr. Tyler Murchie is a biomolecular archaeologist at the Hakai Institute in British Columbia and McMaster University in Ontario, Canada.
Sophie Scott
Dr. Sophie Scott is a professor of cognitive neuroscience at University College London in England.
Segment Transcript
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Meet the Producers and Host
About Flora Lichtman
Flora Lichtman is a host of Science Friday. In a previous life, she lived on a research ship where apertivi were served on the top deck, hoisted there via pulley by the ship’s chef.
About Rasha Aridi
Rasha Aridi is a producer for Science Friday and the inaugural Outrider/Burroughs Wellcome Fund Fellow. She loves stories about weird critters, science adventures, and the intersection of science and history.