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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.

Jul 22, 2019

Jonathan Lefcheck and Robert Orth discuss nutrient pollution and recovery in the Chesapeake Bay.

Jul 8, 2019

Daniel Hodgson explains the physics of chocolate-making.