"HOMER, Alaska -- Kris Holderied, who directs the National Oceanic and Atmospheric Administration's Kasitsna Bay Laboratory, says the ocean's increasing acidity is 'the reason fishermen stop me in the grocery store.'"

"The Obama administration has wound up its controversial investigation of a government polar bear researcher without finding any evidence of scientific wrongdoing, campaign groups said late Friday."

"Monsoon floods in Pakistan have killed 371 people and affected nearly 4.5 million, the government's disaster relief agency said on Friday."

Climate change and warmer temperatures are already hurting agriculture in California.

"A handful of environmental groups are amplifying calls Thursday for President Obama and GOP presidential candidate Mitt Romney to speak up on climate change after a summer of devastating drought, fires, storms and heat."

"With the worst drought in half a century driving feed prices sky high, pork producers are facing an untenable choice: drain their savings and gamble on a better future, or sell off their herd and get out of the business altogether."

"A report by the nonpartisan Congressional Research Service circulated yesterday evening backed up supporters' claim that pricing carbon could be a powerful tool for reining in the federal deficit."