<p>David Keith has spent his career studying ways to reflect sunlight away from the earth. It could reduce the risks of climate change — but it won’t save us.  </p>

David Keith has spent his career studying ways to reflect sunlight away from the earth. It could reduce the risks of climate change — but it won’t save us.

<p>David Keith has spent his career studying ways to reflect sunlight away from the earth. It could reduce the risks of climate change — but it won’t save us. &nbsp;</p>

79. Solar Geoengineering Would Be Radical. It Might Also Be Necessary.

Freakonomics co-author Steve Levitt tracks down other high achievers for surprising, revealing conversations about their lives and obsessions. Join Levitt as he goes through the most interesting midlife crisis you’ve ever heard — and learn how a renegade sheriff is transforming Chicago's jail, how a biologist is finding the secrets of evolution in the Arctic tundra, and how a trivia champion memorized 160,000 flashcards.

To get every show in the Freakonomics Radio Network without ads and a monthly bonus episode of Freakonomics Radio, start a free trial for SiriusXM Podcasts+ on Apple Podcasts or by visiting siriusxm.com/podcastsplus.

Society & Culture

Freakonomics co-author Steve Levitt tracks down other high achievers for surprising, revealing conversations about their lives and obsessions. Join Levitt as he goes through the most interesting midlife crisis you’ve ever heard — and learn how a renegade sheriff is transforming Chicago's jail, how a biologist is finding the secrets of evolution in the Arctic tundra, and how a trivia champion memorized 160,000 flashcards. To get every show in the Freakonomics Radio Network without ads and a monthly bonus episode of Freakonomics Radio, start a free trial for SiriusXM Podcasts+ on Apple Podcasts or by visiting siriusxm.com/podcastsplus.

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79. Solar Geoengineering Would Be Radical. It Might Also Be Necessary.

79. Solar Geoengineering Would Be Radical. It Might Also Be Necessary.

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