Reactor number four of the Chernobyl Nuclear Power Plant suffered an explosion during a technical test on April 26, 1986. As a result of the accident, in the then Soviet Union, more than 400 times more radiation was emitted than that released by the atomic bomb dropped on Hiroshima (Japan) in 1945. It remains the largest nuclear accident in history.

The decline of wild bees across England is linked to the use of controversial pesticides, according to scientists.

Some of the stranger stories from around the world

Halving the amount of meat and dairy eaten in Europe could slash nitrogen pollution from agriculture, improve health and boost food exports, a study has suggested.