A companion book for young readers based upon the explorations of the Americas in 1491, before those of Christopher Columbus.

More than 200 million years ago, geological forces split apart the continents. Isolated from each other, the two halves of the world developed totally different

NATIONAL BESTSELLER • A groundbreaking work of science, history, and archaeology that radically alters our understanding of the Americas before the arrival of

From the bestselling, award-winning author of 1491 and 1493—an incisive portrait of the two little-known twentieth-century scientists, Norman Borlaug and Will

NATIONAL BESTSELLER • A groundbreaking work of science, history, and archaeology that radically alters our understanding of the Americas before the arrival of