"Pacific oysters in the wild on Washington's coast haven't reproduced in six seasons. Scientists suspect ocean-chemistry changes linked to the fossil-fuel emissions that cause global warming are helping kill these juvenile shellfish. The oceans are becoming more acidic, and that corrosive water is finding its way into Puget Sound."

"Forest fires continue to rage around several Russian cities and officials say at least seven people have died, including two firefighters."

"The Environmental Protection Agency unleashed a full-throated defense on Thursday of scientific evidence that mankind is dangerously warming the planet, and of the Obama administration's unilateral moves to curb the heat-trapping gas emissions scientists blame for climate change."

"Despite their tiny size, plant plankton found in the world's oceans  are crucial to much of life on Earth. They are the foundation of the bountiful marine food web, produce half the world's oxygen and suck up harmful carbon dioxide. And they are declining sharply."

"The past decade was the hottest ever recorded, part of an unequivocal pattern of warming dating back 50 years, a National Oceanic and Atmospheric Administration report declared on Wednesday."

"Appalachian coal-mining interests have donated more than $60,000 to the US Senate campaign of Republican Carly Fiorina, the former HP chief executive who's said she's 'not sure' that climate change is occurring. First reported by California Watch,  the donations are the latest indication that California is a key battleground in the political war over climate change."

"The failure of climate legislation in the Senate last week is a blunt reminder of a basic truth, experts say: The nation's energy policies are historically driven by state and regional interests that will trump national agendas in all but the most compelling circumstances.

"The icy Arctic waters around Norway's archipelago of Svalbard may seem pristine and clear, but like the rest of the world's oceans they are facing the threat of growing acidity."

"A deadly infectious disease once thought to be exclusively tropical has gained a toehold in the Pacific Northwest, and health experts suspect climate change is partially to blame."

"Continued climate change will drive Mexican farm workers to migrate to the United States in greater numbers, environmental experts predicted on Monday."