On April 22, 1970, more than 20 million Americans gathered on college campuses and in city squares to celebrate the first Earth Day. Some came to spread the word, others came to learn, but all were a part of the largest organized demonstration in American history. See these snapshots of events around the country.
Meet the Wizard of Odd. Robert Ripley was a new media star and the most popular man in America.
The story of Chicago's dramatic transformation from a swampy frontier town to a massive metropolis in the nineteenth century.
The story behind the development of the oral contraceptive that put women in control of birth control.
The personal journey of three generations of a Japanese American family, including their stint in internment camps during World War II.
When an earthen dam broke without warning, a small city in Pennsylvania was swept away in a wall of water over 30 feet high.
Today one of the most-recognized figures in American literary history, poet Walt Whitman was denounced by critics in his own time.
Intrepid journalist Nelly Bly went on a journey around the world breaking the record of Julius Verne's fictional character.
Before World War II, young Chinese Americans defied cultural tradition in San Francisco's Chinatown, previously closed to outsiders.