There is more carbon dioxide in the atmosphere today than at any point in the past 800,000 years, and the U.S. produces 25 percent of the carbon dioxide pollution from fossil-fuel burning. - Study24x7
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19 Mar 2019 03:25 PM study24x7 study24x7

There is more carbon dioxide in the atmosphere today than at any point in the past 800,000 years, and the U.S. produces 25 percent of the carbon dioxide pollution from fossil-fuel burning.

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