Equipment failure, human error and bad luck led to the country's worst nuclear accident in 1979.
From the Revolutionary War to Operation Desert Storm - newly discovered letters read by celebrity actors tell of courage, longing, and sacrifice.
Brothers Wilbur and Orville Wright built a flying machine that made its first flight in Kitty Hawk, North Carolina in 1903.
After the Soviet blockade of West Berlin, British and American pilots delivered tons of food and fuel to the German city by airplane for nearly a year.
President Woodrow Wilson lead America during World War I, created the Federal Reserve, and helped create the League of Nations. Part of the award-winning Presidents collection.
General Douglas MacArthur led American troops in World Wars I and II before being fired by President Harry Truman during the Korean War.
The international race to develop biological weapons during the 20th century.
Begun during the Civil War, the transcontinental railroad employed 20,000 men, mostly immigrants, who built the iron road with their bare hands.