President Obama left Beijing with a plan to reduce U.S. greenhouse gas emissions from 2005 levels by at least 26 percent by 2025, a goal that many say is unattainable. (Associated Press)
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President Obama left Beijing with a plan to reduce U.S. greenhouse gas emissions from 2005 levels by at least 26 percent by 2025, a goal that many say is unattainable. (Associated Press)
