From: BBC News on Wed, Aug 11 2010 2:01 AM

London Zoo is introducing a new male to its group of gorillas. They have been without a troop leader since the last male died in March, but keepers say it is a tricky operation.

From: BBC News on Wed, Aug 11 2010 2:01 AM

How to trail a garden snail to find out whether the shelled molluscs have a homing instinct.

From: BBC News on Wed, Aug 11 2010 2:01 AM

Astronomers put together the first three-dimensional reconstruction of an exploding star.

From: BBC News on Wed, Aug 11 2010 2:01 AM

There is now optimism about the speed and scale of the remaining clean-up operation after the worst environmental disaster in US history.

From: BBC News on Wed, Aug 11 2010 2:01 AM

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

From: BBC News on Wed, Aug 11 2010 2:01 AM

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.

From: BBC News on Wed, Aug 11 2010 2:01 AM

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

From: BBC News on Wed, Aug 11 2010 2:01 AM

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.