Shadows of Forgotten AncestorsBy: Carl Sagan, Ann Druyan NATIONAL BESTSELLER Exciting and provocative . . . A tour de force of a book that begs to be seen as well as to be read.The Washington Post Book World World renowned scientist Carl Sagan and acclaimed author Ann Druyan have written a Roots for the human species, a lucid and riveting account of how humans got to be the way we are. Shadows of Forgotten Ancestors is a thrilling saga that starts with the origin of the Earth. It