Dave Gardner has sought out some of the brightest thinkers on the planet for the Conversation Earth interview series.

Bill Ryerson | Chairman & CEO, Population Institute; President, Population Media Center

Industrial society is hurtling in a direction enormously different than we expected. The unique constellation of savants presented in Conversation Earth helps us understand the forces propelling us there. It is a timely and important set of discussions.

Dennis Meadows | Co-author, The Limits to Growth

Conversation Earth is about the most serious problem facing humanity — how to keep our insane addiction to growth from causing a collapse of civilization. Every human being should be exposed to this series.

Paul R. Ehrlich | Bing Professor of Population Studies & President, Center for Conservation Biology, Stanford University