2012년 12월 1일 토요일

Greenhouse gases reached record highs in 2011, says U.N. study - CNN.com

Greenhouse gases reached record highs in 2011, says U.N. study - CNN.com: "Concentrations of greenhouse gases in the Earth's atmosphere reached record highs in 2011, according to new data published by the World Meteorological Organization (WMO)."

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