John Mather of the NASA Goddard Space Flight Center explains why and how the James Webb Space Telescope is being built.

Origins of mathematical ability

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.