The brutal cold snap that has put much of the Northern Hemisphere on ice this week doesn't disprove global warming or mean we're off the hook for greenhouse emissions.
At the Copenhagen global warming talks, high-level delegations have arrived to kick negotiations into high gear. But the question of money to help poorer nations grapple with the effects of climate change remains a sticking point.
After the first week of global warming talks in Copenhagen, disagreements between nations are still evident, particularly between industrial heavyweights the US and China.
At Copenhagen climate change talks, a research group says this decade is likely to prove the hottest on record.
100 m.p.h. winds, hail, and rain might have brought Flight 447 down, says a former Air Force meteorologist.
Too few people are changing their lifestyles, environmentalists say, and too few politicians are acting.