January 28, 2013
As Temperatures Keep Rising, Geoengineering Gets a Closer Look
U.S. National Oceanic and Atmospheric Administration
For all the fears and controversy about a warming planet, scientists have settled on one simple fact: It would be pretty cheap and easy to cool it back down again.
The potential side effects, however, are serious. Various tactics for blocking the sun could dry out equatorial regions, accelerate sea-level rise, trigger wars, and sidestep the need to confront problems of fossil fuels beyond the simple issue of the earth's average temperature.
But now, after another year of
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