The theory of evolution by natural selection did not spring fully formed and unprecedented from the brain of Charles Darwin. The idea of evolution had been arou

Historical biogeography—the study of the history of species through both time and place—first convinced Charles Darwin of evolution. This field was so impor

On the Origin of Species (or, more completely, On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for

A century and a half after the publication of Origin of Species, evolutionary thinking has expanded beyond the field of biology to include virtually all human-r

New viral diseases are emerging continuously. Viruses adapt to new environments at astounding rates. Genetic variability of viruses jeopardizes vaccine efficacy