EPA Declares CO2 a Pollutant

It's official: the Obama administration today declared greenhouse gases a threat to public health, which will allow the agency to use the Clean Air Act to regulate emissions without congressional approval, the Washington Post reports. "There are no more excuses for delay," said EPA administrator Lisa Jackson, who will appear at the climate conference in Copenhagen this week. "This administration will not ignore science and the law any longer." (More greenhouse gases stories.)