Richard Dawkins takes on creationists, including followers of 'Intelligent Design' and all those who question the fact of evolution through natural selection. Like a detective arriving on the scene of a crime, he sifts through fascinating layers of scientific facts and disciplines to build a cast-iron case: from the living examples of natural selection in birds and insects; the 'time clocks' of trees and radioactive dating that; to confirmation from molecular biology and genetics. This and much more, bears witness to the truth of evolution. Written with elegance, wit and passion, it is hard-hitting, absorbing and totally convincing.