David Keith has worked near the interface between climate science, energy technology, and public policy since 1991. 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. He is the founder of Carbon Engineering, a Canadian company developing technology to capture CO2 from ambient air to make carbon-neutral hydrocarbon fuels. Best known for his work on the science, technology, and public policy of solar geoengineering, Keith led the development of Harvard's Solar Geoengineering Research Program, a Harvard-wide interfaculty research initiative. His work has ranged from the climatic impacts of large-scale wind power to an early critique of the prospects for hydrogen fuel. Keith's hardware engineering work includes the first interferometer for atoms, a high-accuracy infrared spectrometer for NASA's ER-2, the development of Carbon Engineering's air contactor and overall process design, and the development of a stratospheric propelled balloon experiment for solar geoengineering. Keith teaches science and technology policy, climate science, and solar geoengineering. He has reached students worldwide with an edX energy course. He is author of more than 200 academic publications with a total citation count exceeding 12,000. He has written for the public in op-eds and "A Case for Climate Engineering." He splits his time between Cambridge, Mass., and Canmore, Alberta.

Twitter: @DKeithClimate
Web: https://keith.seas.harvard.edu/