What country has the U.S. helped the most? Where has America's effort made the most difference? Which effort do you think has had the greatest impact on the world... or on the U.S.?
The story behind the development of the oral contraceptive that put women in control of birth control.
Between 1890 and 1920, 12 million people emigrated from Europe arriving in New York Harbor and Ellis Island.
As the star attraction of Buffalo Bill's Wild West Show, Annie Oakley thrilled audiences around the world with her shooting feats. Part of the Wild West collection.
Accused by a janitor, a respected Harvard professor was hanged for the murder of Dr. George Parkman, one of Boston's richest citizens, in 1849.
The Pennsylvania Railroad Company accomplished an enormous engineering feat, but destroyed a great architectural monument.
President Theodore Roosevelt was caught in the middle of the first major battle for wilderness preservation in Yosemite National Park.
This funny, probing program re-examines assumptions about American culture in the 1950s.
The true story behind the most romanticized, infamous outlaw couple in U.S. history and their gang.