So you want to be an explorer? What does it take, you ask? To find out, take a look at Judith St. George and David Small's witty collection of some of the best explorers the world has ever known.You know Marco Polo and Christopher Columbus, but what about Mary Kingsley, who studied cannibals in Africa, or cowboy Jim White, who, by mistake, found Carlsbad Caverns? Full of boundless energy and illustrations you won't forget, this historical jaunt will...