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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 17, 2021

Jeannie Lee describes the discovery of self-cleaving ribozymes.

May 3, 2021

Josh Bongard describes AI-designed, reconfigurable biological organisms made from frog cells.