Dara Ó Briain explores Earth's vital relationship with the sun, from how it was formed and where its ferocious power originates to sun-worship and monuments such as Stonehenge.

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.

Scientists researching Alpine glaciers store ice in Antarctica. By analysing air bubbles in the ice they may be able to predict the future ...