The new regulations face opposition from industry groups who said air quality is already improving.
The White House plans to propose tougher restrictions on the pollutant, setting up a clash with Republicans.
Promised cuts in carbon pollution are still not enough to prevent dangerous warming, U.N. study said.
Shooter Robert O’Neill’s defenders point to the private battles some elite troops face adjusting to civilian life.
McCarthy vowed Monday to move forward on fighting climate change and other environmental regulations.
Diplomats highlighted U.S. gains against pollution in persuading China to accept a deal on climate change.
SEAL Team Six member Robert O'Neill's account of Osama bin Laden's death has added a narrative to the debate over what exactly happened. A key point of contention is whether the first shot, fired by an unnamed point man, hit bin Laden.
Robert O’Neill reveals himself as the shooter amid criticism from his former peers.
The government says the automakers understated greenhouse-gas emissions from1.2 million cars.
A U.N. panel of scientists warned that only an unprecedented global effort to slash emissions will prevent temperatures from crossing a threshold that could trigger dangerous disruptions worldwide.