Xie Zhenhua

China and the United States pledged Wednesday to work more closely together to fight global warming, declaring the climate crisis "one of the greatest challenges of our time".

China and the United States on Nov. 10 vowed to work together to accelerate climate action this decade, separately announcing a surprise pact on global warming, which is already causing disasters across the world.

The United States and China, the world's two biggest carbon polluters, agreed to cooperate to curb climate change with urgency, just days before President Joe Biden hosts a virtual summit of world leaders to discuss the issue.

AFP - California Governor Jerry Brown signed landmark legislation Monday committing his state to a 100 percent clean electricity grid by 2045.

At least 20 countries and twice as many large cities have made similar pledges, but California -- the fifth largest economy in the world -- is by far the biggest jurisdiction to do so to date.