Spend an evening with MacArthur Genius Award-winner and environmental geographer Ruth DeFries, an expert in the study of human impact on the environment.
In her latest book, “The Big Ratchet: How Humanity Thrives in the Face of Natural Crisis,” DeFries unfolds the tale of technologies and innovations, big and small, that propelled our species from hunters and gatherers on the savannahs of Africa to shoppers in the aisles of the supermarket.
In a conversation with Kirk Johnson, Sant Director of the National Museum of Natural History, DeFries will discuss how the cycle of crisis and growth is the story of our species.
The Big Rachet will be available for purchase and signing after the program.
The event is free, but please RSVP: http://go.si.edu/site/Calendar?id=101842&view=Detail&s_src=nmnh_web_fb
This program is made possible through the generous support of David M. Rubenstein.