"Increasing aridity - driven in part by rising temps - makes Yellowstone grasslands less productive despite carbon dioxide's fertilizing benefits."

"A group of California farmers, in a surprising turnaround, is volunteering to give up a fourth of its available water this year, sharing a resource all but guaranteed to them for more than a century."

"Republican Jeb Bush rejected on Thursday what he called an arrogant view that anyone who questions how much climate change is a result of human activity is considered 'Neanderthal.'"

"An unprecedented alliance of news publishers including the Guardian, El País, Le Monde and China Daily have agreed to share climate change content to raise awareness in the runup to the next UN summit."

"US House Republicans voted to place limits on funding for scientific research, including climate change studies, as they passed legislation that more narrowly defines their priorities."

"Rising seas and thawing permafrost caused by warmer global temperatures threaten U.S. military bases and will change the way the U.S. armed services defend the country, President Barack Obama said on Wednesday."

"California PTA adopts resolution on teaching climate science, but its passage nationwide and its impact beyond the state are uncertain."

"President Obama will use a commencement address at the Coast Guard Academy in Connecticut on Wednesday to cast his push for urgent action to combat climate change as a national security imperative, arguing that the warming of the planet poses an 'immediate risk' to the United States."

"California and leaders of 11 states and provinces signed an agreement on Tuesday to limit their output of heat-trapping greenhouse gases 80 to 95 percent by 2050, a goal they hope will help prevent runaway climate change."

"Vastly more Americans will be exposed to dangerous heat waves in future decades because of a combination of rising temperatures and rapid population growth in the South and West, scientists warned in a study published Monday."