"China is poised to overtake the United States as the main cause of man-made global warming since 1990, the benchmark year for U.N.-led action, in a historic shift that may raise pressure on Beijing to act."

"A group of Harvard University students are calling for the school to sell off its investments in fossil fuel companies. Protesters began blocking the entrance to the main administration building Sunday night."

"Ontario will join a cap-and-trade market set up by Quebec and California to reduce carbon emissions and slow the pace of climate change, provincial Premier Kathleen Wynne said on Monday."

"In drought-era California, does 'fire season' mean anything?"

"FABENS, Tex. — On maps, the mighty Rio Grande meanders 1,900 miles, from southern Colorado’s San Juan Mountains to the Gulf of Mexico. But on the ground, farms and cities drink all but a trickle before it reaches the canal that irrigates Bobby Skov’s farm outside El Paso, hundreds of miles from the gulf."

"The glaciers of the Canadian West could shrink by 70 percent by 2100, according to new research that has implications for predicting glacier loss around the world."

Republicans, who have as a political party denied the overwhelming consensus science on climate change, may face political consequences in future elections.

"Discussing climate change is out of bounds for workers at a state agency in Wisconsin. So is any work related to climate change — even responding to e-mails about the topic. A vote on Tuesday by Wisconsin’s Board of Commissioners of Public Lands, a three-member panel overseeing an agency that benefits schools and communities in the state, enacted the staff ban on climate change."

"A new statistical model grinds national poll data about climate change as finely as any pepper mill, and it can predict the public's climate change beliefs, risk perceptions, and policy preferences right down to the level of each state, county and congressional district, its authors say."

"When Gov. Jerry Brown issued the first statewide water use reduction order in California history on Wednesday, he put his emphasis squarely on cities and towns."