Mounting evidence suggests the rubble of an asteroid once formed a ring orbiting our planet’s equator.

Palaeontologist don’t just dig up dinosaur bones – they study the whole history of life on Earth, and uncover clues about its future too.

Deep-sea sediments show how the changing orbits of Earth and Mars are linked to past global warming and the speeding up of deep-ocean eddies.

Despite cold temperatures, water was relatively abundant in much of the southern hemisphere during ice ages.