The Darwin seminars at the LSE have become a crucial intellectual forum in recent years, attended by leading scientists, social scientists, journalists, film-makers, TV producers and writers as diverse as AS Byatt and Douglas Adams. The series, "Darwinism Today", consists of a series of short books, each drawing on the content of one of the seminars and written by many of the leadingfigures in the Darwinian revolution. In "The Embryo and Evolution" John Maynard Smith writes on the development of the human embryo and its evolutionary context