NBC News: Can Hacking the Planet Stop Runaway Climate Change?

""Geoengineering" is the catch-all term for attempts to alter Earth's climate in order to mitigate the effects of global warming. And, not surprisingly, it's been controversial from the start. Critics have derided it as "playing God" with the environment, and the potential risks are almost too many to tally — even its proponents stress that the consequences of large-scale climate intervention are impossible to foresee. But as the signs of global warming multiply, geoengineering is beginning to seem like a plausible solution — or at least part of a solution — to today's climate woes. "


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