The story of science: power, proof and passion. Part 3, How did we get here?.

Presented by Michael Mosley, this is the third in a five-part series looking at the history of scientific discovery. In this part, Mosley looks back at the quest for our human origins. On the way he encounters ocean adventurers, French aristocrats, muontain climbers, a Victorian publisher with 12 fingers and, of course, Charles Darwin.