Geo-engineering the Earth's Atmosphere

David Keith speaks at Smithsonian magazine's 2015 Future Is Here Festival (10:28)

David Keith has worked near the interface between climate science, energy technology, and public policy 25 years. He took first prize in Canada’s national physics prize exam, won MIT’s prize for excellence in experimental physics, and was one of TIME magazine’s Heroes of the Environment. David divides his time between Cambridge where he is a Professor in the Harvard Kennedy School; and Calgary, where he helps lead Carbon Engineering a company developing technology to capture of CO2 from ambient air.