The most damaging tropical cyclones are three times more frequent now than they were 100 years ago.

A loss of snow and ice cover are the main reasons for the reduction of the Arctic's albedo effect, not soot as had been previously thought.

Astronomers are observing a rare event, a transit of the planet Mercury.

The rare hoiho becomes the first penguin to take the title, after two weeks of "memes and trash-talk".

Cutting the speed of ships by 20% can benefit health, protect whales and limit warming, say campaigners.

A British Airways insider says the industry deliberately fills planes with extra fuel to save costs.