Two astronauts have attempted to repair a broken cooling system on the International Space Station, in an eight-hour space walk.

An orphaned baby sea otter has been rescued and nursed back to health in Alaska.

Conservationists are preparing to scout the world for traces of amphibian species that are believed to be extinct, but may just be clinging to existence.

Iraq has a history of keeping wild animals as status symbols and now there is a ready market for rare animals and no controls on trading them.

Cranes are being reintroduced to the West Country 400 years after they were last regularly seen in the area.

Ancient ruins in a south London car park could be shortlisted for World Heritage Site status. Rajini Vaidyanathan finds out what criteria need to be fulfilled.

Astronomer Dr Heather Couper explains why Nasa are hoping to send astronauts to asteroids.

More loggerhead sea turtles nest on the Greek island of Zakynthos than anywhere else in the Mediterranean but they are at risk from the tourist trade.

The death toll in flooding in central Europe has risen to 10 as official confirmation came of two more fatalities in south western Poland on Sunday.

As Rwandans prepare to vote in only the second presidential election since the genocide in the country 16 years ago, individuals are facing up to the legacy of the killings.