African tigerfish have been filmed catching swallows in flight by scientists.

Councils that back fracking will get to keep more money in tax revenue, PM David Cameron says, urging opponents to "get on board".

Predictions that asteroids hold a vast resource of raw materials ripe for commercial exploitation could be some way off the mark, a study suggests.

India marks three years since its last case of polio was reported, a landmark seen as confirmation of one of its biggest public health successes.