Footage from the 1927 flood. Clips include shots of workers along the Mississippi River enforcing the levees with sandbags, Secretary of Commerce Herbert Hoover surveying the damage, and aerial views of the flooding.
The story of the farmers who dreamed of prosperity and lived through ten years of drought, dust, disease and death.
The New Deal program CCC put three million young men to work in camps across America.
When an earthen dam broke without warning, a small city in Pennsylvania was swept away in a wall of water over 30 feet high.
High on a granite cliff in South Dakota's Black Hills tower the huge carved faces of four American presidents: George Washington, Thomas Jefferson, Abraham Lincoln, and Theodore Roosevelt.
Before radar had been invented a devastating hurricane hit America, surprising residents of the East Coast and killing more than 600 people.
Native Alaskans, oil company representatives, environmentalists, politicians, and others tell the story of the 800-mile pipeline.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
The most daring and innovative accomplishment at the turn of the 20th century.