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Updated: 35 min 11 sec ago
UK climate targets 'unachievable'
UK government plans to make carbon emission cuts of 80% by 2050 are impossible to achieve, according to an analysis.
'Big drop' in Amazon deforestation
The level of deforestation in the Amazon drops by 45% to the lowest on record, Brazil's government says.
Amazon tree loss at 'record low'
The rate of deforestation drops by 45% to the lowest on record.
Greenland ice loss 'accelerating'
Satellites, models and ground stations give scientists a better view than ever before of how the Greenland icecap is melting.
Rosetta makes final home call
Europe's Rosetta probe is making its final Earth flyby as it seeks to position itself to chase down a comet in 2014.
Rosetta to make final home call
Europe's Rosetta probe will make its final Earth flyby on Friday as it seeks to position itself to chase down a comet in 2014.
Indian elephants to go from zoos
The Central Zoo Authority in India confirms to the BBC that elephants will no longer be allowed to be kept by zoos or circuses in the country.
Indian elephants to go from zoos
The Central Zoo Authority in India confirms to the BBC that elephants will no longer be allowed to be kept by zoos or circuses in the country.
Strong signal
Europe's Galileo sat-nav system takes shape
Deep-sea fish captured on film
Images of the deepest living fish spotted in the southern seas.
Frenzied bees enter deadly combat
Male Dawson's bees kill each other en mass in a bid to mate with females, a bloody battle filmed by a BBC natural history team.
Bees fight to death over females
Male Dawson's bees are filmed in deadly combat over females.
Sniff test to preserve old books
The key to preserving old, treasured books is contained in the compounds that produce their smell, say scientists.
Sniff test to preserve old books
The key to preserving old, treasured books is contained in the compounds that produce their smell, say scientists.
Crime rings boost ivory smuggling
The last year has seen a big increase in illegal ivory trade with organised crime involved, says the world's monitoring agency.
Crime rings boost ivory smuggling
The last year has seen a big increase in illegal ivory trade with organised crime involved, says the world's monitoring agency.
Lithium clue for planet-hunters
Astronomers tell the journal Nature that Sun-like stars with orbiting planets tend to be depleted in the element lithium.
Lithium clue for planet-hunters
Astronomers tell the journal Nature that Sun-like stars with orbiting planets tend to be depleted in the element lithium.
Astronaut trial
Ex-astronaut gets probation for attack on love rival
Astronaut trial
Ex-astronaut gets probation for attack on love rival