Starting in the 1950s, Americans eagerly built the planet's largest public work: the 42,795-mile National System of Interstate and Defense Highways. Before the concrete was dry on the new roads, however, a specter began haunting them--the highway killer. He went by many names: the "Hitcher," the "Fr[...]

Americans call Niagara Falls a natural wonder, but the Falls aren't very natural anymore. In fact, they are a study in artifice. Water diverted, riverbed reshaped, brink stabilized and landscape redesigned, the Falls are more a monument to man's meddling than to nature's strength. Held up as an exam[...]