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BBC (U.K.) 

Europeans drawn from three 'tribes'

Most present-day Europeans are a mixture of three ancient populations, according to a major study published in the journal Nature.

Chin strap turns chewing into power

Engineers build a chin strap that harnesses the energy produced by jaw movements, and could one day power hearing aids or bluetooth earpieces.

Better mobility key for clean cities

Effective urban transit systems can encourage people out of their cars and provide a cost-effective way to tackle climate change, a report suggests.

Nasa picks astronaut ship designs

The US space agency picks the companies it hopes can take the country's astronauts back into space - a capability lost when the shuttles retired in 2011.

Richard III death injuries revealed

King Richard III was probably killed by two blows to the head during a "sustained attack", according to new research.

Ebola vaccine trial begins

A trial of an experimental vaccine against the Ebola virus is to begin in Oxford.

VIDEO: Lasers deliver brighter 3D films

BBC Click looks at a new laser projector that promises to deliver brighter and clearer pictures.

Inky prints show state of hedgehogs

Hedgehogs are more thinly spread in the UK than previously believed, a study using ink pads to record their paw prints reveals.

Ebola global security threat - Obama

US President Barack Obama calls the Ebola outbreak in West Africa a threat to security worldwide while announcing a larger US role, including 3,000 troops, to help fight the virus.

Red card for 'greenest' government

The government is failing to reduce air pollution, protect biodiversity and prevent flooding, a cross-party body of MPs says.

Climate change remedies 'affordable'

A global commission says the extra costs of tackling climate change will be 'modest', but doing nothing could put the world economy at risk.

US gas leaks not caused by fracking

A new study suggests that the contamination of drinking water by shale gas is due to faulty wells and not hydraulic fracturing.

Rosetta comet landing site chosen

Europe's Rosetta mission, which aims to land on a 4km-wide comet later this year, identifies what it thinks is the safest place to touch down.

Ancient China fish 'nearly extinct'

The Chinese sturgeon, thought to have existed for more than 140 million years, is now on the brink of extinction, say local media.

Brazil builds giant Amazon tower

Construction has begun on a giant observation tower in the heart of the Amazon basin in Brazil to monitor climate change.

Ban on shark trade comes into force

In a significant step forward for shark conservation, all trade in five named species is to be regulated from today.

Goldfish has brain operation

An Australian goldfish called George is recovering from successful microsurgery in which a large tumour was removed from his brain.

China boy finds 3,000-year-old sword

Archaeologists date the weapon to the Shang or Zhou dynasties - the dawn of Chinese civilisation.

Progress for giant laser instrument

The Advanced Ligo instrument, a laser "ruler" built to measure the traces of gravitational waves, is progressing at amazing speed, scientists say.

Robot could load up dishwasher

A robot unveiled today at the British Science Festival will be loading dishwashers next year, its developers claim.

'Giant swimming dinosaur' unearthed

A giant fossil, unearthed in the Sahara desert, has given scientists an unprecedented look at Spinosaurus - the largest-known carnivorous dinosaur.

Brain 'still active during sleep'

The brain is still active while we sleep, say scientists, who found people were able to classify words according to their meaning during their slumber.

Rosetta comet chaser takes 'selfie'

The Rosetta spacecraft has sent a hauntingly beautiful picture of itself from deep space.

Concussion 'breathalyser' proposed

Scientists in Birmingham are trialling new medical tests that lead to rapid, pitchside diagnosis of concussion in sport.

Western Australia shark cull blocked

Western Australia's shark cull is to be halted after the state's environmental regulator advised against it, citing "scientific uncertainty".

Consumers driving 'shock' tree loss

Around five football fields of tropical forest have been illegally cleared every minute between 2000 and 2012 according to a new report.

Amazon destruction increases again

New figures show destruction of the Amazon rainforest in Brazil has risen again, with more than almost 6,000 sq km (2,315 sq miles) being cleared.

Prioritising islands' pest control

Scientists develop a way to identify island habitats under threat from invasive vertebrates, such as rats, and in greatest need of protection.

Food crop wild relatives endangered

Scientists from the University of Birmingham compile a database that identifies and maps the wild relatives of common food crops.

Blue whale numbers bounce back

Researchers believe that California blue whales have recovered in numbers and the population has returned to sustainable levels.


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