Watch Charles Darwin: Evolution's Voice (1998) Official Trailer

Charles Darwin's theory of evolution stands as one of the most important discoveries in the history of science. Yet in his lifetime, Darwin was reluctant to reveal what he had learned for fear that it would make outcasts of him and his family. This fascinating installment of A&E's popular "Biography" series profiles the life and times of the controversial naturalist, presenting excerpts from his journals and opinions from expert scholars.