U.S. eyes ozone treaty to curb warming gas Momentum was building Thursday for a novel Obama administration strategy: Use the U.N. treaty to fix the ozone hole as a way to enact mandatory reductions in a key greenhouse gas. [News Source]

U.S. eyes ozone treaty to curb warming gas Momentum was building Thursday for a novel Obama administration strategy: Use the U.N. treaty to fix the ozone hole as a way to enact mandatory reductions in a key greenhouse gas. [News Source]

Freeman Dyson and the irresistible urge to be contrary about climate change (Scientific American) Eminent physicist Freeman Dyson raised eyebrows a month ago when he told the New York Times Magazine that a little extra carbon dioxide--and global warming--might turn out to be good for the planet. So when we saw his name on an event around the corner from Scientific American's offices we figured we'd go hear his criticisms, dubbed "Climate Disasters, Safe Nukes and Other Myths," firsthand. ... [News Source]

Special Report: Climate change demands wind energy (Simcoe.com) Wind energy advocate and entrepreneur Derek Tennant says you can't be on the fence about global warming. [News Source]

Arctic nations must act at UN climate change conference: ministers (CBC) Foreign affairs ministers from Canada and seven other Arctic countries wrapped up top-level meetings in Norway on Wednesday, having been urged to make commitments on climate change at an upcoming United Nations conference later this year. [News Source]

US wants to move on climate change. The Obama administration, in a major environmental policy shift, is preparing to ask 195 nations that ratified the U.N. ozone treaty to enact mandatory reductions in hydrofluorocarbons, according to U.S. officials and documents obtained by The Associated Press. [News Source]

‘Safe’ climate means ‘no to coal.’ About three-quarters of the world's fossil fuel reserves must be left unused if society is to avoid dangerous climate change, scientists warn. [News Source]

‘Safe’ climate means ‘no to coal.’ About three-quarters of the world's fossil fuel reserves must be left unused if society is to avoid dangerous climate change, scientists warn. [News Source]

Barack Obama’s 100 days: Green measures. Barack Obama promised on his very first day in the White House to help move America towards a new green future. Now, 100 days on, environmentalists in general have been impressed by the speed and sheer sweep of Obama's efforts. [News Source]

Time to act. It is not too late yet — but we may be very close. If present trends continue, humankind will have emitted a trillion tonnes of carbon into the atmosphere well before 2050, and that could be enough to push the planet into the danger zone. And there is no reason to think that the pressure will stop then. [News Source]

Ranking the 10 greenest oil companies. Oil: it's a dirty word in much of the green community. It's blamed for international conflicts, global warming and wildlife-killing spills. [News Source]