The latest stories from the Science & Environment section of the BBC News web site.
Scientists use gravity data to produce what they say is the most accurate space view yet of global ocean currents and the speed at which they move.
Archaeologists in Denmark have uncovered an incredibly rare find: a stone age axe held within its wooden handle.
Urban agriculture plays a much more extensive role in global food security than previously estimated, a study using satellite data suggests.
The brain has a weak spot for Alzheimer's disease and schizophrenia, according to experts who have pinpointed the region using scans.
A novel autonomous sub acquires the first detailed, high-resolution 3D maps of Antarctic sea ice.
Peru's environmental police launch an investigation into the deaths of some 500 sea lions found on a northern beach.
Engineering needs to emphasise its creative side to encourage more young people to take it up as a career, says a leading member of the profession.
Eider ducks on Northumberland's coastal areas are being harmed by people feeding them fish and chips and bread, a wildlife expert warns.
Thirty nations meeting in Berlin have pledged $9.3bn (£6bn) for a fund to help developing countries cut emissions and prepare for climate change.
The way geckos climb has inspired a device that allowed a 70kg man to scale a glass wall like Spider-Man.
A British-led consortium outlines its plans to land a robotic probe, paid for by public donations, on the Moon in 10 years' time.
UK government comes under renewed pressure to cut pollution from diesel vehicles following the latest ruling in a battle over clean air.
Proposed changes to planning policy would be "catastrophic" for rural areas, rural housing and planning authorities warn.
The Philae lander has detected organic molecules on the surface of its comet, scientists have confirmed.
Russia may be testing a satellite capable of chasing down and inspecting other orbiting spacecraft, experts say.
Overseas territory demands compensation for atom bomb tests.
A campaign begins to reduce light pollution in South Downs National Park and give it dark skies special status.
The European Space Agency and Airbus sign a contract that will see the aerospace giant build the "back end" of America's new manned spaceship.
The world's largest crane ship, which is capable of lifting oil rigs, sets sail from its shipyard in Korea for Rotterdam port in the Netherlands.
High-resolution pictures have now been released of the Philae probe around the time of landing on Comet 67P last Wednesday.
TV physicist Brian Cox and the visual effects team behind Gravity are to create a new 3D live show using a cutting-edge augmented reality system.
A small study by Dutch scientists suggests a single 10-second kiss can transfer as many as 80 million bacteria.
The pilot who survived the Virgin Galactic spaceship crash was thrown clear as the craft broke up around him, investigators say.
The number of lightning strikes across the UK has been significantly affected by solar activity, according to new research.
The public are being asked to provide information on the locations of nine fugitives suspected of serious environmental crimes.