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

Last updated on  April 1st, 2015

US makes climate pledge to UN: Click here
The US has pledged to tackle climate change by cutting its carbon emissions 26-28% by 2025.

LHC fixes glitch, prepares for beams: Click here
The short circuit delaying the restart of the Large Hadron Collider has been fixed, after a blast of high current melted the metal particle responsible.

EU milk quota system is abolished: Click here
EU milk quotas are scrapped, bringing an end to more than 30 years of efforts to prevent overproduction.

China building 'great wall of sand': Click here
The scale of China's land reclamation in the South China Sea is leading to "serious questions" on its intentions, a top US official says.

New renewables break capacity bar: Click here
New renewable generating capacity broke the 100GW barrier in 2014, equivalent to the entire fleet of nuclear power plants in the US, a UN report shows.

Ants in space grapple with zero-g: Click here
A study finds that ants on board the International Space Station still use teamwork to search new areas, despite falling off the walls of their containers for up to eight seconds.

Indian monsoon's past analysed: Click here
Fossils from the ocean floor are yielding clues to the Indian monsoon millions of years ago.

Solar aeroplane lands in China: Click here
Solar Impulse, the fuel-free aeroplane, lands in Chongqing, China, to complete leg five of its attempt to fly around the world.

Mercury 'painted black' by comets: Click here
The mystery of Mercury's dark surface can be explained by a steady dusting of carbon from passing comets, research suggests.

Porpoises use 'sound searchlights': Click here
Porpoises finely adjust the size of the beams of sound they use to hunt - using sound like a searchlight to trap their prey, a study finds.

Duo begin year-long space trip: Click here
US astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko arrive for a 12-month tour of duty on the International Space Station.

Tech sites lead on April Fools gags: Click here
The Force - the mysterious energy field used by the Jedi in Star Wars - has been discovered by researchers at the Cern laboratory in an April Fools prank.

Graphene light bulb set for shops: Click here
A light bulb made with graphene - said by its UK developers to be the first commercially viable consumer product using the super-strong carbon - is to go on sale later this year.

Ramakrishnan to lead Royal Society: Click here
Nobel-winning structural biologist Venki Ramakrishnan is elected to become the next president of the Royal Society.

Tiger-tagging app to boost tracking: Click here
A new iPad app is asking users to "tag" tigers in images gathered from the internet, to help researchers with counting and tracking the animals.

Europe drops asteroid sampling idea: Click here
Europe will not be mounting a sample-return mission to an asteroid, having rejected the MarcoPolo concept at the third time of asking.

Ministers challenged over CO2 cuts: Click here
The UK government’s claim that the country leads the world in cuts of carbon emissions is challenged by researchers at Leeds University.

Huge marine reserve for Pitcairn: Click here
The UK government is to establish the largest marine reserve in the world around the Pitcairn Islands in the Pacific.

Mercury pollution risk to Arctic gull: Click here
Mercury pollution has risen nearly 50-fold in the feathers of a gull that feeds and breeds in the Arctic, say scientists.

Tidal lagoon 'negotiations open': Click here
Negotiations are opening on a £1bn tidal lagoon scheme in Swansea as the chancellor gives his Budget speech in the House of Commons.

VIDEO: £135k to move voles: Money well spent?: Click here
£135,000 was spent relocating water voles so work could begin dredging two Somerset rivers in 2014.

VIDEO: The secret language of whales: Click here
Researchers at the Smithsonian Institution in Washington say whale communication depends on jaw movements and the methods these mammals use to catch food.

VIDEO: Taste testing desert's solar plant water: Click here
A new multimillion dollar project that uses solar power to treat underground saline water is offering a ray of hope in south east Pakistan.

VIDEO: Abandoned horses 'crisis' - RSPCA: Click here
The RSPCA says it is looking after so many abandoned horses, donkeys and ponies that it cannot take in any more.

VIDEO: A year in space: Soyuz docks at ISS: Click here
A Russian Soyuz spacecraft has docked at the International Space Station carrying three astronauts, two of whom are due to spend a record 12 months there.

VIDEO: How porpoises use sound to hunt: Click here
Researchers in Denmark have discovered that porpoises can adjust the beams of sound they use to hunt.

VIDEO: Solar plane takes off in Myanmar: Click here
The Solar Impulse 2 plane has departed from Mandalay in Myanmar as part of its round-the-world flight, Kasia Madera reports

Are we tired of climate change talk?: Click here
Has the media lost interest in climate change?

Can you win at anything if you practise hard enough?: Click here
A one-year experiment asks if learning is more about hard work than natural ability

Is fibre key to connecting Africa?: Click here
Is fibre key to connecting Africa?

What is the point of the Large Hadron Collider?: Click here
What are the justifications for the £4bn Large Hadron Collider?

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