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By Alister Doyle, Environment Correspondent BONN (Reuters) - Tighter limits on soot and smog provide a quick and easy way to fight global warming while protecting human health and raising crop output, a U.N. study said on Tuesday.

By Nina Chestney and Jackie Cowhig LONDON (Reuters) - Germany's plan to shut all its nuclear power plants by 2022 will add up to 40 million metric tons of carbon dioxide emissions annually as the country turns to fossil fuels, analysts said on Tuesday. [More]

By Zach Howard BUCKLAND, Mass (Reuters) - White nose syndrome, a devastating disease that has killed more than one million bats in the Northeast, has been found in Maine, the last New England state to discover it, wildlife officials said on Tuesday. [More]

Physicists said on Tuesday they believed that by the end of 2012 they could determine whether a theorised particle called the Higgs boson, which has unleashed a gruelling decades-long hunt, exists or not.

By Christopher Le Coq BRUSSELS (Reuters) - The European Union should halt the rapid extinction of plant and animal species by 2020 because it will cost less than trying to repair the damage once it is done, Europe's environment chief said on Tuesday. [More]

April 12 (Reuters) - The operator of Japan's crippledFukushima Daiichi nuclear power plant said on Tuesday that they [More]

LOS ANGELES (Reuters) - Virgin Group founder Richard Branson, known for such exploits as trying to balloon around the world, said on Tuesday he planned to explore the deepest parts of the world's oceans with a jet-like submarine. The 18-foot vessel is capable of descents more than 36,000 feet below the surface, said Branson at a news conference in Newport Beach, California.

By Timothy Gardner WASHINGTON (Reuters) - The United States fell one spot to third place in clean-energy investment last year as the lack of a national energy policy hurt purchases in wind and solar power and other technologies, a report said on Tuesday.

By Fredrik Dahl and Alister Doyle VIENNA/OSLO (Reuters) - Miniscule numbers of radioactive particles believed to have come from Japan's crippled Fukushima nuclear power plant have been detected as far away as Iceland, diplomatic sources said on Tuesday. [More]

Requiring fast-food restaurants in New York City to post calorie counts on menus did little to cut the number of calories children and teens consumed, U.S. researchers said on Tuesday.

Women who are poor are much more likely to be obese but men are not, U.S.

The U.S. Environmental Protection Agency has dropped the artificial sweetener saccharin from its list of hazardous substances, the agency said on Tuesday.

Daily exercise over a period of 20 years helps to significantly reduce weight gain in middle age, but even that is not enough to keep away middle age bulges entirely, U.S. researchers said on Tuesday.