More tests next month might mean the pods for the science-fictional transport system hit 500 km/h

Conservation charity WWF warns that the species were found in areas at risk from human activity.

This is the largest radio telescope on Earth, 5,000m up in the Atacama Desert. It can see stars and planets being born millions of light-years away.

Why has the government returned to an industrial strategy abandoned in the 1980s?

Vet Amir Khalil goes into conflict areas to save the zoo animals left behind.

US authorities approve a treatment which re-designs a patient's own immune system to attack cancer.

The order prevents the government from exploiting a protected area bigger than Denmark.

New data gathered by the Cassini probe suggests Saturn's icy bands formed relatively recently.

Birds rely on smell to find their bearings when land is out of sight, according to a study.

A 200-million-year-old fossil 're-discovered' in a museum is something special, say scientists.

The arguments nearly a century ago over the use of leaded petrol.

The sight, off the coast of Florida's Anna Maria Island, was filmed on Thursday afternoon.

A new citizen science survey aims to shed light on that fixture of summertime in the outdoors: the wasp.

A huge rockfall in Val Bondasca raises questions about how climate change is affecting the Alps.

Proposals to expand the A3 at a junction with the M25 could mean the loss of 500 trees at the Royal Horticultural Society Garden Wisley.

Hundreds of years after the dodo died out, new facts are emerging about the life history of the bird.

Rising Arctic temperatures are boosting commercial shipping in the region, worrying environmentalists.

Scientists are divided on whether snow leopards are still endangered species, a BBC investigation finds.

The previously-protected area is bigger than Denmark and is thought to be rich in gold.

Campaigners in Poland are worried about the future of one of Europe's last primeval forests, as the Polish government defies an EU order to stop logging there.