The Galápagos Archipelago, a remote chain of volcanic islands in the vastness of the Pacific Ocean, where Charles Darwin spent almost 6 weeks in 1835 during the course of a 5-year voyage around the world aboard HMS Beagle, was the genesis of what became his great theory: that far from being pre-ordained, life on earth in fact evolves by natural selection over millions of years. He then spent 20 years developing his theory before finally publishing it in1859 in his landmark On the Origin of Species that has never been out of print to this day. Darwin had revolutionised our understanding of the world and of our place within it - and the Galápagos was his laboratory.