Just 227 species account for half of Amazonia's trees

Despite being home to about 16,000 tree species, just 227 "hyperdominant" species account for half of Amazonia's total trees, a study suggests.

An international team of researchers found that the region was, in total, home to an estimated 390 billion trees.

European Wildlife making a comeback

Some of Europe's key animals have made a comeback over the past 50 years, a report suggests.

Conservationists say species such as bears, wolves, lynx, eagles and vultures have increased in numbers.

They believe that protection, curbs on hunting and people moving away from rural areas and into cities have helped Europe's wildlife to recover.

The analysis was carried out by the Zoological Society of London, Birdlife and the European Bird Census Council.