This is a new title in the "Facets" series. It explores intelligent design - the notion that individual species are too complex to have developed through evolution and therefore must be the work of God. It outlines what the theory of evolution claims. It differentiates the roles of science and theology. It identifies weaknesses in the intelligent design argument. It is written by a world renowned biologist (winner of the 2001 National Medal of Science). It is a compact yet illuminating exploration of this heated debate.