"The Obama administration on Tuesday announced a series of moves aimed at cutting emissions of hydrofluorocarbons, or HFCs, powerful greenhouse gases that contribute to climate change."

"A United Nations chief dismayed at the lack of resolve toward the climate crisis; a daunting deadline for negotiating a new treaty; 125 or so heads of state; a sprawling agenda of fossil fuels, food, forestry and finance; a train of think tanks hauling gigabytes of green data; countless teach-ins, press conferences, art shows—plus tens or even hundreds of thousands of activists marching through midtown Manhattan, demanding action now."

"Fire crews in California battled on Tuesday to halt the advance of wildfire that has already destroyed about 150 homes, lapped at rural schools and caused power outages that left an evacuation shelter without electricity, authorities said."

"Ahead of the UN climate talks, a high-level panel makes the case that investing in climate solutions is the smart-money choice."

"A giant hotspot in the North Pacific Ocean may help explain why a massive ocean sunfish was spotted in Prince William Sound this month and a skipjack tuna was caught in a gillnet weeks earlier near the mouth of the Copper River, scientists say."

Oysters have been the foundation of a booming business for the Hog Island Oyster Company in Northern California. But ocean acidification as a result of increasing atmospheric carbon dioxide is threatening that.

"Carpetbagger Scott Brown is discovering that his newfound refusal to accept climate science may hurt him in November’s New Hampshire Senate election. According to a new poll commissioned by the League of Conservation Voters, 48 percent of New Hampshire voters say they would be less likely to support a candidate who does not acknowledge the reality of climate change, versus only 21 percent who say they would be more likely."

"A day after the National Audubon Society released a report saying that about half of North America’s 650 bird species will be threatened by climate change, a report released Tuesday by the United States Fish and Wildlife Service and other federal agencies concluded that nearly one-third of American birds are in trouble."