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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.

May 26, 2020

Ellen Welti explains how grasshoppers in a Kansas prairie could be in decline even with abundant grass.

May 11, 2020

NAS member David Baker describes how to design proteins from scratch and the products of his lab's own protein design efforts

May 4, 2020

Elli Theobald and Scott Freeman describe the benefits of active learning for underrepresented minority students.