"The earth is performing an enormous disposal service for the human race. About half of the carbon we are dumping into the atmosphere does not stay there and is instead taken up by the oceans and land. Were this not the case, scientists say, the earth would probably be warming far more rapidly. One of the biggest questions in climate science is: How long will that disposal service last?"

"With about a month and a half remaining in the Arctic melt season, sea ice cover continues to decline at a rapid pace, and is currently on par with where the 2007 record melt season stood at the same time of year."

"TOKYO -- The Japanese utility that operates the nuclear power plant sent into meltdown by last year's tsunami received a trillion yen ($12.8 billion) public bailout Tuesday, effectively putting it under government control."

"Four times in the past century, a new strain of flu has emerged that can spread quickly in humans. One of those strains, which emerged in 1918, killed an estimated 50 million people."

"Athletes completing their final pre-Olympics training, and members of the public gathering in London for the final stages of the Olympic torchrelay, have been warned of high levels of pollution in the UK capital on Thursday, ahead of the opening ceremony on Friday night."

"Radioactive strontium-90 from the crippled Fukushima No. 1 nuclear power plant has been detected for the first time in 10 prefectures outside Miyagi and Fukushima, the science ministry said July 24."

"Secret files reveal the German maker of thalidomide ignored and covered up repeated warnings that its drug could damage unborn babies."

"Cutting soot and other air pollutants could help 'buy time' in the fight against climate change, a senior U.S. official said on Tuesday as seven nations joined a Washington-led plan."

"Three simple numbers that add up to global catastrophe - and that make clear who the real enemy is."

"The surface of Greenland's massive ice sheet has melted this month over an unusually large area, NASA has said."