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The latest stories from the Science & Environment section of the BBC News web site.
Actualizado: hace 3 horas 10 mins
Reading Arabic 'hard for brain'
Israeli scientists believe they have identified why Arabic is particularly hard to learn to read.
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Plans for solar 'close encounter'
Nasa is aiming to get closer to the Sun than ever before, with plans to plunge a car-sized unmanned spacecraft into the star's outer atmosphere.
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Panda twins delight Japanese zoo
New-born twin giant pandas made their first public appearance at a zoo in Japan on Friday in Shirahama.
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Wolves fail to halt aspen decline
The re-introduction of wolves to a US National Park has not helped re-establish quaking aspens, as many researchers had hoped.
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BP says oil spill cost up to $8bn
BP says the cost of its Gulf of Mexico oil spill has risen to $8bn - a rise of more than $2bn in the last month alone.
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Mighty mouse study on St Kilda
Researchers begin a three-year study to uncover the secrets of St Kilda's super-sized field mice.
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Sharks swarm off Australian coast
Hundreds of sharks have been spotted off the Queensland coast.
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Earl weakens as it nears US coast
Hurricane Earl weakens as it nears the US East Coast, though officials warn it remains "large and powerful".
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Technique to trace persistent CFCs
Ultrafine measurements of atmospheric gases could help scientists track down the last sources of CFCs thought to be slowing the recovery of the ozone layer.
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Openness urged on UK's emissions
The government's chief environment scientist calls for more openness in admitting the UK's cuts in greenhouse gas emissions are an illusion.
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Amazon river level at 40-year low
The River Amazon has dropped to its lowest level in 40 years in north-eastern Peru, leaving boats stranded.
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Did the Universe need a creator?
There is no place for God in theories on the creation of the Universe, the physicist and mathematician Professor Stephen Hawking has said.
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Creation was Godless says Hawking
There is no place for God in theories on the creation of the Universe, Professor Stephen Hawking concludes in a new book.
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'Lights out' help migratory birds
A growing number of New York sky-scrapers switch off their lights at night to help reduce the number of migratory birds hitting the buildings.
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Ants protect trees from elephants
A species of acacia tree found in Eastern Africa seems to be protected from elephant damage - by the ants that live on it.
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Worm brain clue to evolution
Researchers map the nervous system of worms to try and understand how the human cerebral cortex evolved.
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Memristor revolution backed by HP
A potentially revolutionary circuit component, once a laboratory curiosity, is to be mass-produced for the first time.
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Rare tree flowers after 23 years
A rare Chinese tree has flowered for the first time in 23 years at Kew's country estate in West Sussex.
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Free kick study boost for footballers
Dr Andy Harland of Loughborough University analyses what new free-kick trajectory findings mean for footballers.
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