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BBC News - Science & Environment
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The latest stories from the Science & Environment section of the BBC News web site.
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Why zebras evolved their stripes
A zebra's unmistakeable stripes may have evolved to make the animals unattractive to blood-sucking flies, say scientists.
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Threshold broken for tiny lasers
Researchers build efficient lasers just 100 billionths of a metre across that may be used to make faster computer chips in the future.
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America and Asia 'will join up'
Researchers say most of the world's continents will merge somewhere over the Pacific "ring of fire" in 50-200 million years.
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Russians claim Antarctic success
Russian scientists are reporting success in their quest to drill into Lake Vostok, a huge body of liquid water buried under the Antarctic ice.
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Corals inflate to escape the sand
Time-lapse footage reveals how mushroom corals inflate and deflate to free themselves from smothering sand.
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'Invader' drives ladybird decline
Fast declines in some UK and European ladybirds are being caused by the spread of the invasive harlequin species, scientists show.
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Whales 'stressed by ocean noise'
A study of hormones in whale faeces shows that right whales are stressed by propeller noise from shipping.
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Skydiver planning 36km record bid
Felix Baumgartner, the Austrian planning to sky dive from a record-breaking altitude, has announced he will make the attempt later this year.
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Parkinson's cells 'made in lab'
Scientists in the US have successfully made human brain cells in the lab that are an exact replica of genetically caused Parkinson's disease.
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Wolfram Alpha unveils Pro service
The data-crunching site unveils a premium service that allows users to upload data, photos and sounds for analysis.
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Mars co-operation near collapse
US space agency officials let their European counterparts know that it is now highly unlikely that America will participate in joint missions to the Red Planet in 2016 and 2018.
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Jurassic cricket's song recreated
The "love song" of a 165-million-year-old insect is recreated from a tiny and remarkably intact fossil, say scientists.
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Black hole 'vaporising asteroids'
For years scientists have been trying to explain the reason why a giant black hole at the centre of the Milky Way has bright flares coming out from its centre.
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Rare Mars meteorite for science
A Martian meteorite, an incredibly rare object, is given to the Natural History Museum, London, to help unravel the secrets of the Red Planet.
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Transplant jaw made by 3D printer
An 83-year-old woman is fitted with a jaw made by a 3D printer in what doctors say is the first operation of its kind.
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