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By Rebecca MorelleScience reporter, BBC World Service Researchers have analysed the long-term effect of growing up alone People growing up under China's one child policy are less trusting, more risk averse and more pessimistic, a study concludes. An Australian team of researchers compared people who were born just before the policy was introduced with those...

By Mark KinverEnvironment reporter, BBC News Rising gold prices has seen an increase in small-scale gold mines, most of which use mercury Developing nations are facing growing health and environmental risks from increased exposure to mercury, according to a UN report. It says a growth in small-scale mining and coal burning are the main reasons for the rise in emissions. As...

By Jonathan AmosScience correspondent, BBC News The Dragon capsule currently flies to the space station in an unmanned configuration California's SpaceX company says it expects to start launching humans into orbit in its Dragon capsule in 2015. Its intention is to be able to deliver a crew to the International Space Station by the end of that year. The first...

By Jason PalmerScience and technology reporter, BBC News, Long Beach, California Supernovas are traditionally named after composers Astronomers have spotted the most distant supernova ever seen. Nicknamed "Mingus", it was described at the 221st American Astronomical Society meeting in the US. These lightshows of dying stars have been seen since ancient...

Reindeer have caused great damage to the fragile South Georgian eco-system, trampling native plants and destroying birds' nests and penguin habitats The world's mostly southerly herd of reindeer is to be culled to try to save the environment of the island of South Georgia. The 3,000 reindeer are trampling native plants, causing erosion and endangering king penguins...

By Rebecca MorelleScience reporter, BBC World Service Esa's Herschel Space Observatory captured Apophis in its field of view in the far-infrared light in January 2013 A 300m-wide asteroid is making a close pass to the Earth. Apophis – named after the Egyptian demon of destruction and darkness – has been put on a watch list by scientists. They have...

By Jason PalmerScience and technology reporter, BBC News, Long Beach, California Beta Pictoris was the first star outside our Solar System known to host a comet A new haul of comets around distant stars has been unveiled, more than doubling the number we know of. The first such "exocomet" was discovered in 1987 but since then only three more had been...

By Jonathan AmosScience correspondent, BBC News The wrinkles may act like the tread on tyres Science may be getting closer to explaining those prune-like fingers and toes we all get when we sit in a hot bath too long. UK researchers from Newcastle University have confirmed wet objects are easier to handle with wrinkled fingers than with dry, smooth ones. They...

By David ShukmanScience editor, BBC News The Met Office says its long-term projections forecast significant warming The UK Met Office has revised one of its forecasts for how much the world may warm in the next few years. It says that the average temperature is likely to rise by 0.43 C by 2017 – as opposed to an earlier forecast that suggested a warming of...

By Jonathan AmosScience correspondent The brushed surface of rock is about 5cm across Nasa's Mars rover Curiosity has used its brush tool for the first time to sweep dust off the surface of a rock. The rotating wire bristles cleared a roughly 5cm-wide patch on an area of ground dubbed "Ekwir 1" by scientists. Brushing away the dust gives the robot's...