Earliest human footprints in North America, dating violins with tree rings, and the social life of DNA

Earliest human footprints in North America, dating violins with tree rings, and the social life of DNA

Contributing Correspondent Lizzie Wade joins host Sarah Crespi to discuss fossilized footprints left on a lake shore in North America sometime before the end of Last Glacial Maximum—possibly the earliest evidence for humans on the continent. Read the research. Next, Paolo Cherubini, a senior scientist in the dendrosciences research group at the Swiss Federal Institute for Forest, Snow and Landscape Research, discusses using tree rings to date and authenticate 17th and 18th century violins worth millions of dollars. Finally, in this month’s installment of the series of book interviews on race and science, guest host Angela Saini interviews Alondra Nelson, professor in the School of Social Science at the Institute for Advanced Study, about her 2016 book The Social Life of DNA: Race, Reparations, and Reconciliation After the Genome. Note on the closing music: Violinist Nicholas Kitchen plays Johann Sebastian Bach’s Chaconne on the violin “Castelbarco” made by Antonio Stradivari in Cremona, Italy, in 1697. Courtesy of the U.S. Library of Congress. This week’s episode was produced with help from Podigy. [Image: Bennet et al., Science; Music: Jeffrey Cook] [Alt text: human footprints preserved in rock] Authors: Sarah Crespi; Lizzie Wade; Angela Saini See omnystudio.com/listener for privacy information. Learn more about your ad choices. Visit megaphone.fm/adchoices

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A caterpillar that haunts spiderwebs, solving the last riddles of a famed friar, and a new book series

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Linking cat domestication to ancient cult sacrifices, and watching aurorae wander

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Why sign language could be crucial for kids with cochlear implants, studying the illusion of pain, and recent political developments at NIH

First up this week, science policy editor Jocelyn Kaiser joins host Sarah Crespi to discuss the latest news about the National Institutes of Health—from reconfiguring review panels to canceled grants ...

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