Population growth is speeding toward a number between 10 and 12 billion humans by the end of the century. That rate of growth makes the challenge of building a sustainable future a daunting task. But important research presented in a new book, “World Population and Human Capital in the 21st Century,” suggests that population growth projections overlook one crucial variable that could prove to be the ultimate game changer. That’s the focus of this edition of REWIND.

Jason Bremner, Associate Vice President and Program Director of Population, Health, and Environment, Population Reference Bureau
William Butz, Senior Research Scholar, World Population Program; Director of Coordination and Outreach, Wittgenstein Centre for Demography and Global Human Capital
Roger-Mark De Souza, Director of Population, Environmental Security and Resilience, Wilson Center
Wolfgang Lutz, Founding Director, Wittgenstein Centre for Demography and Global Human Capital; Leader, World Population Program, IIASA
Scott Radloff, Senior Scientist and Director, PMA2020, Bill & Melinda Gates Institute for Population and Reproductive Health