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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.

Oct 15, 2019

Shara Bailey explains the significance of a three-rooted lower molar in an archaic jaw.


Sep 30, 2019

Noel Clark and Tommaso Bellini describe how nucleic acids form double-helical liquid crystals, with implications for the origins of life.


Sep 16, 2019

Benjamin de Haas explains individual differences in eye movement patterns.


Sep 4, 2019

Eric Boilard explains the role of serotonin and platelets in immune responses.


Aug 19, 2019

A collection of research articles explores developments in interfacial transport and mixing, with wide-ranging practical applications.