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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.

Sep 28, 2020

William Nordhaus explains the economic consequences of Greenland ice sheet melt.

Sep 14, 2020

NAS member Dalton Conley explains how the Vietnam War draft lotteries are a natural experiment for studying how military service affects life outcomes.

Aug 31, 2020

Clark Larsen describes the costs of urban life a Neolithic city.

Aug 17, 2020

Mette Svenning and Alexander Tveit describe a bacterium that can live on gases in the air.

Aug 3, 2020

Derek Moulton explains the mathematics behind bivalve shell design.