Sean Palecek and Xiaojun Lian describe their efficient method for converting stem cells into heart muscle cells.

Interview with 2012 Cozzarelli Prize Winners Paloma Gonzalez-Bellido, Hanchuan Peng, and Apostolos Georgopoulos

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.