"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."

"Recent rain has brought much-needed relief to drought-stricken Texas. Is the relief more than temporary? "

"The Stephen Harper government had barely revealed its plans for Canada’s climate targets before environment groups laid into the announcement, criticizing it as meaningless and short-sighted."

"Commodity investors are in a twist about the weather. Warmer ocean temperatures last spring indicated an El Niño event was on the horizon, signaling buys, sells, and hedging positions in securities linked to products impacted by storms and droughts. Everything from sugar prices to coffee futures were retooled."

Two different ice sheets in Antarctica are on the verge of disintegrating, which would add dramatically to climate-related sea-level rise.

"Senate Republicans introduced a bill Wednesday that would overturn the Obama administration’s landmark climate regulations for power plants and make it nearly impossible to rewrite them."