Cockatoos learn to make and use tools when shown by another bird, research reveals.

Helen Howard started a snail farm in her spare bedroom and allotment seven years ago - now she sells to restaurants and private chefs.

David Cameron may have made himself a hostage to fortune when pledging to lead the greenest government ever in 2010.

Global consumption of meat needs to fall to ensure future demand for food can be met and to help protect the environment, a study says.

The US Space Agency Nasa has released new footage showing a series of powerful solar flares.

Five hundred global citizens frustrated at the stalemate over climate policy will learn today if they have won the chance to vent their anger at world leaders.

The RSPCA is calling for a ban on keeping primates as pets after a rise in the number of calls to its cruelty and advice line concerning animals such as monkeys and marmosets.

An extremely rare Galapagos tortoise thought to be 100 years old has been given a new home at a zoo in Ohio.

Swansea University scientists are conducting the largest field trial in Europe to find new ways of killing Japanese knotweed.

A study by the National Trust suggests seabirds around the UK coastline are being hit by a "triple whammy" of extreme weather, predators and disturbance by humans.

Over the decades tonnes of disposed tents, spent oxygen cylinders and bottles have been left behind on Mount Everest by people trying to scale it. Now authorities are urging them to bring the waste back down with them to recycle it.

California has been hit by its worst drought in a century and many say the problem is only going to get worse.

BBC Newsnight's Stephen Smith visits Dover to assess how much of a threat buddleia is to native species

A farmer explains his relationship with his sheepdog, after researchers help unravel the mystery of how the animals do their job.

The world's rarest bird is facing extinction unless it finds a new home, say conservationists

The European Space Agency releases time-lapse footage of the Aurora Australis, or southern lights, filmed from the International Space Station.

The National Zoo in Washington DC has been celebrating panda cub Bao Bao's first birthday.

Iceland issues a red alert to the aviation industry for the Bardarbunga volcano, meaning significant ash emissions are likely.

A Soyuz rocket carrying two satellites which will make up part of a new European sat-nav system, blasts off from French Guiana.

Comedians Paul McCaffrey and Tiff Stevenson discuss how comedy is created.