"Drought conditions in the United States eased slightly over the last week, though dry soils and water shortages persisted across wide swaths of important farm states, particularly Nebraska, a key corn and cattle state."

"The first major snowfall of the year and a cold snap set to sweep into the northern Midwest could harm some late-maturing corn and soybeans crops and delay the harvest, an agricultural meteorologist and the National Weather Service said on Thursday."

"An analysis of Greenland ice core samples indicates significant global methane emissions per capita during the Roman Empire and China's Han Dynasty — much greater than had been known."

"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."