Grist: In what may prove to be a watershed moment in the fight against climate change, President Obama and Chinese President Xi Jinping announced from Beijing on Wednesday that they are pursuing ambitious new greenhouse gas emission reductions.
China and the U.S. are the worlds two largest emitters of heat-trapping gases like carbon dioxide and methane, and their cooperation is absolutely essential to the success of any global effort to scale back emissions and avert catastrophic climate change.
According...