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Welcome to Science Sessions, the PNAS podcast program. Listen to brief conversations with cutting-edge researchers, Academy members, and policymakers as they discuss topics relevant to today's scientific community. Learn the behind-the-scenes story of work published in PNAS, plus a broad range of scientific news about discoveries that affect the world around us. Please scroll down for recent podcasts.

  1. All Episodes
  2. 2020

Preserving muscle and bone mass in space

Dec 14, 2020

Se-Jin Lee and Emily Germain-Lee explain a way to preserve bone and muscle mass during spaceflight.

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Predicting the Asian giant hornet’s spread

Nov 23, 2020

David Crowder and Gengping Zhu explain how to predict the spread of the Asian giant hornet.

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Supernova and mass extinction

Nov 9, 2020

Brian Fields explores a hypothesis that a supernova may be responsible for a mass extinction.

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Future of artificial intelligence

Oct 26, 2020

Eric Horvitz discusses AI’s promises and perils.

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Origin and diversification of penguins

Oct 12, 2020

Juliana Vianna and Rauri Bowie explain the origin and diversification of penguins.

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