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.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
The story of the American civil rights movement is told through its powerful music -- the freedom songs that protesters sang on picket lines, in mass meetings, in police wagons, and in jail cells as they fought for justice and equality.
The life of the legendary photographer, known best for his black and white images of the wilderness of the American West.
Between 1854 and 1929 more than 100,000 abused or orphaned children were sent by train to the Midwest to begin new lives in foster families.
This film follows the 65 "British soldiers" and 67 "American rebels" who reenact the 1775 Battle of Lexington and Concord.
A personal story of one family's dramatic effort to hold onto their family farm in Iowa as massive foreclosures sweep the nation in the 1990s.
The history of New York City and the people and forces that have shaped it over the past 400 years is told in a seven-part 14.5-hour series.
Newspaper magnate William Randolph Hearst fought to suppress a film by Orson Welles, a film that would become one of cinema's masterpieces.