U.N.: Greenhouse Gases Hit High in 2006

(AP) -- Two of the most important Greenhouse gases in the Earth's atmosphere reached a record high in 2006, and measurements show that one - carbon dioxide - is playing an increasingly important role in global warming, the U.N. weather agency said Friday.

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<p><a href="http://www.physorg.com/news115041820.html">U.N.: Greenhouse Gases Hit High in 2006</a></p> <p>(AP) -- Two of the most important Greenhouse gases in the Earth's atmosphere reached a record high in 2006, and measurements show that one - carbon dioxide - is playing an increasingly important role in global warming, the U.N. weather agency said Friday.</p>