U.S. and China release new joint climate pledge

The U.S. and China released a joint agreement Wednesday affirming the two superpowers and adversaries would work together to combat the climate crisis, with specific urgency this decade. 

The agreement states that both nations, the world's two largest greenhouse gas emitters, will establish a working group "which will meet regularly" to discuss climate measures. China produces 27% of the world's greenhouse gas emissions, significantly more than the rest of the developed world. The U.S., the next biggest emitter, produces 11%.

The pledge comes as China's commitment to Paris Agreement goals have been in question as negotiations take place at the U.N. global climate summit in Glasgow, Scotland.