Obama looking at cooling air to fight warming

(AP) -- Tinkering with Earth's climate to chill runaway global warming - a radical idea once dismissed out of hand - is being discussed by the White House as a potential emergency option, the president's new science adviser said Wednesday.

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<p><a href="http://www.physorg.com/news158416336.html">Obama looking at cooling air to fight warming</a></p> <p>(AP) -- Tinkering with Earth's climate to chill runaway global warming - a radical idea once dismissed out of hand - is being discussed by the White House as a potential emergency option, the president's new science adviser said Wednesday.</p>