EPA closer to global warming warning (Update)

(AP) -- The Environmental Protection Agency has taken the first step on the long road to regulating greenhouse gases under the Clean Air Act.

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<p><a href="http://www.physorg.com/news157054387.html">EPA closer to global warming warning (Update)</a></p> <p>(AP) -- The Environmental Protection Agency has taken the first step on the long road to regulating greenhouse gases under the Clean Air Act.</p>