Geography is useful, indeed necessary, to survival. Everyone must know where to find food, water, and a place of rest, and, in the modern world, all must make an effort to make the Earth--our home--habitable. But much present-day geography lacks drama, with its maps and statistics, descriptions and analysis, but no acts of chivalry, no sense of quest. Not long ago, however, geography was romantic. Heroic explorers ventured to forbidding environments--oceans,...