Seeds of exotic plants illegally collected in the Himalayas are being sold in the UK, a BBC investigation has found.

Oil giant Shell is being sued in London for the second time in five years over spills in the Niger Delta but Shell says it is reviewing the claims and the case should be heard in Nigeria.

The fossil of a microscopic fungus that dates back 440 million years is thought to be the oldest of its kind - and the earliest fossil evidence of land dwellers.

A 7.8 magnitude earthquake strikes off the coast of western Indonesia, the US Geological Survey reports, with local tsunami warnings in place.

Sentinel-3a, the EU's latest Earth observer, returns its first pictures of the planet, featuring a collection of ocean and land margins.