Evolution’s Evolution

Darwin’s dangerous idea has adapted to modern biology

EVOLUTIONARY BOOKS Reproduced with permission from John van Wyhe, ed., The Complete Work of Charles Darwin Online (darwin-online.org.uk)

A STUDY OF HANDS | “What can be more curious that the hand of a man, formed for grasping, that of a mole for digging, the leg of a horse, the paddle of the porpoise, and the wing of the bat, should all be constructed on the same pattern, and should include the same bones, in the same relative positions?” — Darwin, On the Origin of Species Clockwise, bottom left: Andreas Feininger/Time & Life Pictures/Getty Images; Philip Dowell (c) Dorling Kindersley; Robert Clark

GOING BATTY Darwin sought intermediates that would shed light on the evolution of novelties such as bat wings (top).