Darwin's theory that men's ancestors were apes caused a furore in the scientific world and outside it when The Origin of Species was published in 1859. Arguments still rage about the implications of his evolutionary theory, and scepticism about the value of Darwin's contribution to knowledge is widespread. In this analysis of Darwin's major insights and arguments, Jonathan Howard reasserts the importance of darwin's work for the development of modern biology. `Jonathan Howard has produced an intellectual tour de force , a classic in the genre of popular scientific exposition which will still be read in fifty year's time.' Times Literary Supplement. This book is intended for a-level and degree students of biology, zoology, and animal science.