In this book, John Gribbin tells the story of the people who made science and the turbulent times they lived in. As well as famous figures such as Copernicus, Darwin and Einstein, there are also the obscure, the eccentric, even the mad. This diverse cast includes, among others, Andreas Vesalius, landmark 16th-century anatomist and secret grave-robber; the flamboyant Galileo, accused of heresy for his ideas; the obsessive, competitive Newton, who wrote his rivals out of the history books; Gregor Mendel, the Moravian monk who founded modern genetics; and Louis Agassiz, so determined to prove the existence of ice ages that he marched his colleagues up a mountain to show them the evidence.