Go behind the scenes at the country's busiest transportation hub. Half a million people pass through New York City's Penn Station every day. During rush hour, a train arrives at a platform every 58 seconds. Phil Kaplan has worked for Amtrak for 37 years, and he takes us for an unusual behind the scenes look at the Central Control room.
Robert Moses fueled some of the most ambitious -- and controversial -- public works projects ever conceived.
French settlers in Louisiana merged with African Americans, Afro-Caribbeans and others to create Cajun and Zydeco musical traditions.
The life of the legendary photographer, known best for his black and white images of the wilderness of the American West.
Intrepid journalist Nelly Bly went on a journey around the world breaking the record of Julius Verne's fictional character.
The international race to develop biological weapons during the 20th century.
Equipment failure, human error and bad luck led to the country's worst nuclear accident in 1979.
While the U.N. debated strategies for control of atomic energy, the U.S. Navy was preparing for nuclear tests on Bikini Island.
Postwar New York City and the global economic order told through the story of the World Trade Center.