The remains of a religious pilgrim shed light on how leprosy came to Europe, researchers say.

World Bank funding is being used to subsidise fossil fuel projects at the expense of cleaner options, a study reports but it is a claim strongly disputed by the World Bank.

US scientists draw controversy as they claim to have fulfilled the decades-long quest to turn hydrogen into a state where it behaves like a metal.

A tiny possum, an emblem of the state of Victoria in Australia, is rapidly heading towards extinction, say scientists.