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Blotting Out the Sun to Save the Earth? Seriously?

The latest geoengineering conversation has been sparked in part by a study published last week in the journal Nature that acknowledges the potential benefits of solar radiation management (SRM)—as well as the very real risks that would come along with it. One much-discussed iteration of SRM would involve saturating Earth's atmosphere with sulfur-laden aerosols to reflect solar light back into space, cooling the planet in the process. Support for the theory began to swell among geoengineering proponents after the discovery that global temperatures fell by as much as 0.6 degrees Celsius following giant volcanic eruptions in Mexico and the Philippines that spewed millions of tons of sulfur dioxide into the atmosphere.  Read more...

 

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