Paul Pogba says "the time is right to go back to Old Trafford" as he completes his world-record £89m transfer to Manchester United.

New research blames rising temperatures over the last century as the key cause of decline in Lake Tanganyika, one of the world's most important fisheries.

The Florida Department of Health is investigating another case of Zika contracted in the state.

Turkish President Recep Tayyip Erdogan is due to hold talks with Vladimir Putin in Moscow, on his first foreign visit since an attempted coup last month.

A single drug can treat three deadly and neglected infections - Chagas disease, leishmaniasis and sleeping sickness - animal studies show..

Controversial Russian swimmer Yulia Efimova is beaten to Olympic gold by Lilly King of the USA in the women's 100m breaststroke.

Japan's foreign minister says ties with China are "significantly deteriorating" amid a rise in Chinese vessels entering disputed waters in the East China Sea.

The judge in Led Zeppelin's Stairway To Heaven copyright trial rejects the band's attempts to recoup $800,000 in costs.