Scientists call for 'geoengineering' tests to find ways to cool the planet

February 16, 2015 2:51 AM

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SAN JOSE, Calif. -- Scientists are calling for tests to find ways to cool the planet -- the first step toward exploration of the controversial field of geoengineering, which aims to change the climate by blocking the sun's rays.

It might be necessary if society can't agree on how to stop carbon emissions that are heating up Earth, a panel of experts said at the weekend meeting of the American Association for the Advancement of Science.

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