Robert Moses built bridges, highways, Jones Beach, Lincoln Center and the United Nations in New York. His were some of the most ambitious -- and controversial -- public works projects ever conceived.
For 21 years, Chicago mayor Richard J. Daley ruled the city, building the Sears Tower and O'Hare Airport.
At the height of segregation, an unlikely alliance between a black medical genius and a white surgeon led to a pioneering medical breakthrough.
Engineered by William Barclay Parsons, the 21-mile, four-track route of the New York City Subway was the largest public works project in history.
The unusual life of David Vetter, who lived permanently inside a germ-free environment due to severe combined immunodeficiency.
An African American minister whose dream of ending racism galvanized millions of Americans in the civil rights movement.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
William "Buffalo Bill" Cody's legendary exploits helped create the myth of the American West that still endures today.
The Alabama governor and presidential candidate promised segregation forever.