In the early years of the 18th century, a band of French scientists set off on a daring, decade-long expedition to South America in a race to measure the precise shape of the earth. Like Lewis and Clark's exploration of the American West, their incredible mission revealed the mysteries of a little-known continent to a world hungry for discovery. Scaling 16,000foot mountains in the Peruvian Andes, and braving jaguars, pumas, insects, and vampire bats...