Professor Alice Roberts discovers the story of how humans left Africa to colonise the world in The Incredible Human Journey.
Alice Roberts reveals how our family tree grew and spread out across the world.
Simon Reeve navigates along the Tropic of Cancer in this series of images.
Photos from Tribal Wives; the ultimate wife swap!
America and Eurasia were once home to the sort of mammals that draw tourists to Africa.
A gallery of photos from the incredible human natural history series Human Planet.
Michael Mosley heads Inside the Human Body.
Find out all about TV presenter and human anatomist Alice Roberts.