David Keith and Geoengineering

Environmental scientist David Keith proposes a cheap, effective, shocking means to address climate change: What if we injected a huge cloud of ash into the atmosphere to deflect sunlight and heat?

Those of you who have read SuperFreakonomics are familiar with the argument, but David Keith, a professor at the University of Calgary, is one of the more respected voices in the climate change community who has addressed geoengineering, “deliberately manipulating the Earth’s climate to counteract the effects of global warming from greenhouse gas emissions.”

Only a 16-min video, but worth the time for those concerned about, or interested in, climate change. At the very least you’ll be convinced that geoengineering should be “moved out of the shadows.”

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