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By Matt McGrathEnvironment correspondent, BBC News Researchers used measurements from several reservoirs, including this one at Puclaro, northern Chile Researchers say that large man-made reservoirs can increase the intensity of rainfall and could affect flood defences. The scientists found that rain patterns around bodies of water in Chile were much higher than...

Homosexuality was illegal at the time of Alan Turing's conviction Some of Britain's leading scientists have called on the government to grant a posthumous pardon to Bletchley Park codebreaker Alan Turing. Turing was convicted of gross indecency in 1952 after acknowledging a sexual relationship with a man. Professor Stephen Hawking, Astronomer Royal Lord Rees...

Tony Burt snapped pictures from Paisley early on Friday morning The annual Geminids meteor shower peaked overnight into Friday morning. Each December, meteors appear to radiate from a point near the star Castor, in the constellation Gemini. In early morning hours, that is located westward and overhead in the northern hemisphere and nearer the horizon in the southern...

By Helen BriggsBBC News Chalara dieback of ash is caused by the Chalara fraxinea fungus The first genetic data on the fungus afflicting British ash trees has been released on the web by UK scientists. Part of the RNA of the fungus has been sequenced, revealing information about how the disease spreads. Researchers at The Sainsbury Laboratory and the John Innes...

By Matt WalkerEditor, BBC Nature New to science A new species of small nocturnal primate has been discovered by scientists in Borneo. The primate is a type of slow loris, a small cute-looking animal that is more closely related to bushbabies and lemurs than to monkeys or apes. Uniquely among primates, they have a toxic bite, belying their appearance. Two previously...

By Jonathan AmosScience correspondent, BBC News Objects like UDFj-39546284 are at the limit of the Hubble telescope's vision Hubble astronomers have observed deeper into space than ever before. In doing so, they have identified six new galaxies of stars that formed just a few hundred million years after the Big Bang itself. The study also updates a distance...

As shark numbers fall, other species further down the food chain are put at risk The Cook Islands has approved a shark sanctuary in its waters, making for the largest such sanctuary in the world. The South Pacific island chain declared a 1.9 million-sq-km sanctuary, contiguous with one established last week by neighbouring French Polynesia. That sees a ban on shark fishing...

  New pictures from Antarctica capture the moment that a search for life under the ice-sheet finally got under way. The project to investigate Lake Ellsworth involves using a hot-water drill, aiming for waters isolated for up to half a million years. The first stage of the operation was to fire up the boiler that is being used to melt vast quantities of snow....

By Roger HarrabinEnvironment analyst // source:...

By Jonathan AmosScience correspondent, BBC News Objects like UDFj-39546284 are at the limit of the Hubble telescope's vision Hubble astronomers have observed deeper into space than ever before. In doing so, they have identified six new galaxies of stars that formed just a few hundred million years after the Big Bang itself. The study also updates a distance...