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The latest stories from the Science & Environment section of the BBC News web site.

Last updated on  September 22nd, 2014

Cosmic study 'underestimated' dust: Click here
Scientists who claimed to have found evidence for a cosmic super-expansion just after the Big Bang underestimated a key confounding factor in their research, according to a new analysis.

Molten metal batteries for the grid: Click here
Engineers have invented a battery made of three liquefied metals, which they say is efficient and cheap enough to store power on the electric grid.

Global protests over climate change: Click here
Street protests demanding urgent action on climate change attract hundreds of thousands of marchers across more than 2,000 locations worldwide.

China overtakes EU on 'per head' CO2: Click here
New research shows China's rising emissions per head of population have overtaken the EU while the global total reaches a new high.

'Artificial eye' to detect particles: Click here
The human eye has inspired physicists to create a processor that can analyse particle collisions 400 times faster than currently possible.

Slippery banana study wins Ig Nobel: Click here
Research that investigated why bananas are slippery when you step on them wins one of this year's Ig Nobel prizes.

Forest land rights need global focus: Click here
Recognising the land rights of local people could provide cost-effective protection for many of the world's tropical forests, a report says.

Murder 'comes naturally' to chimps: Click here
A major international study finds that killings among chimpanzees result from normal competition, not human interference.

Europeans drawn from three 'tribes': Click here
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: Click here
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: Click here
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: Click here
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: Click here
King Richard III was probably killed by two blows to the head during a "sustained attack", according to new research.

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

VIDEO: Lasers deliver brighter 3D films: Click here
BBC Click looks at a new laser projector that promises to deliver brighter and clearer pictures.

Inky prints show state of hedgehogs: Click here
Hedgehogs are more thinly spread in the UK than previously believed, a study using ink pads to record their paw prints reveals.

Goldfish has brain operation: Click here
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: Click here
Archaeologists date the weapon to the Shang or Zhou dynasties - the dawn of Chinese civilisation.

Ebola global security threat - Obama: Click here
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.

Rosetta comet landing site chosen: Click here
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.

Progress for giant laser instrument: Click here
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: Click here
A robot unveiled today at the British Science Festival will be loading dishwashers next year, its developers claim.

'Giant swimming dinosaur' unearthed: Click here
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': Click here
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.

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

Ancient China fish 'nearly extinct': Click here
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: Click here
Construction has begun on a giant observation tower in the heart of the Amazon basin in Brazil to monitor climate change.

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

Ban on shark trade comes into force: Click here
In a significant step forward for shark conservation, all trade in five named species is to be regulated from today.

Consumers driving 'shock' tree loss: Click here
Around five football fields of tropical forest have been illegally cleared every minute between 2000 and 2012 according to a new report.

Blue whale numbers bounce back: Click here
Researchers believe that California blue whales have recovered in numbers and the population has returned to sustainable levels.

Spitting fish 'adjust for distance': Click here
Scientists say the jets of water that archer fish use to shoot down prey are precisely tuned, to make maximum impact at just the right distance.

Badger vaccination scheme under way: Click here
A scheme to vaccinate badgers against bovine tuberculosis in a bid to tackle the disease in cattle is launched by the government.

AUDIO: Could 'marshmallow test' teach you?: Click here
The famous experiment in child psychology from the the 1960s which became known as the marshmallow test has been updated by the experiment's inventor, Walter Mischel.

AUDIO: When Temple of Mithras was unearthed: Click here
A project is under way calling for people with memories of the excavation if the Temple of Mithras to come forward to tell their stories and share their pictures of the event.

VIDEO: Climate change in global spotlight: Click here
Street protests demanding urgent action on climate change have attracted hundreds of thousands of marchers in more than 2,000 locations worldwide.

VIDEO: SpaceX lifts off for ISS with supplies: Click here
A SpaceX cargo ship rocketed toward the International Space Station on Sunday, carrying the first 3D printer for astronauts in orbit.

VIDEO: Hurricane Odile stuns Mexico resorts: Click here
Hurricane Odile causes devastation in the beach resorts of Mexico's Baja California peninsula, triggering looting in some areas.

VIDEO: Cheetah cubs unveiled in San Diego: Click here
A pair of three-week-old cheetah cubs are unveiled at San Diego Zoo's Safari Park.

VIDEO: Examining a rare colossal squid: Click here
Scientists have had the extremely rare chance to examine an intact colossal squid after it was accidentally caught in the Antarctic, as Mauricio Olmedo-Perez reports

VIDEO: Leonardo DiCaprio's UN climate role: Click here
The Hollywood actor, Leonardo diCaprio, has been appointed as a United Nations representative on climate change.

The 'green blob' loves Mr Ban - but for how long?: Click here
Ban Ki-moon wins hearts on the street, but will charm work on leaders?

Mars Maven mission arrives in orbit: Click here
US satellite arrives in orbit around the Red Planet

Tomb mystery captivates Greece: Click here
Secrets of ancient burial site keep Greeks guessing

Astronomy Photographer of the Year 2014: Click here
Twinkling stars and swirling gases - winning visions of the night sky

Ants v humans: Click here
Do all the world's ants really weigh as much as all the humans?

VIDEO: Overcooked? The hi-tech smart pan: Click here
The pan that aims to eliminate guesswork from cooking

From toilet to table, overcoming the ‘yuk’ factor: Click here
How Haitians overcame the 'yuk' factor

The scary element that helps probe space's secrets: Click here
The scary element that helps probe space's secrets

Build your Martian dream home: Click here
Is this how the cities of Mars will be built?

The freedivers who swim with whales: Click here
The freedivers risking their lives to swim with whales

Five bugs that lurk in changing rooms: Click here
Five bugs that lurk in changing rooms

Mers: Saudis in push to keep Hajj free from deadly virus: Click here
Have Saudis done enough to keep Hajj safe from deadly virus?

Alien species making England home: Click here
Why do terrapins live in canals?

Pakistan-India monsoon floods: Averting future disasters: Click here
Dams and reservoirs could mitigate South Asia floods

Mars probe 'inspired by lobsters': Click here
Designers of new Mars instrument draw on nature

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