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

Conservationists eagerly await the results of a UK study investigating whether it is possible to track endangered shark species via environmental DNA.

Solar Impulse, the solar-powered plane attempting to fly around the world, is back in the air again, crossing India and hoping to make it to Myanmar.

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.

Chancellor George Osborne is expected to take plans for a £1bn tidal lagoon scheme in Swansea a step closer to fruition in the Budget, the BBC understands.

The UK government is to establish the largest marine reserve in the world around the Pitcairn Islands in the Pacific.

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

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