Simon Reeve navigates along the Tropic of Cancer in this series of images.
Michael Mosley pushes his body to the edge to find out The Truth About Exercise.
See more from Michael Mosley's history of surgery; Blood and Guts.
Photos from Tribal Wives; the ultimate wife swap!
Much like love, synthetic biology can mean different things to different people.
A gallery of photos from the incredible human natural history series Human Planet.
Michael Mosley heads Inside the Human Body.