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.
A daunting story of shipwreck, starvation, mutiny and cannibalism amongst a group left abandoned in the high Arctic.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
John Wesley Powell's epic journey into the unknown Grand Canyon was filled with adventure as his team mapped the Colorado River for the first time.
The contradictory history of a dam that became a statement of American power and prestige.
The coal miners' battle for dignity led to the largest armed insurrection since the American Civil War.
Robert Marshall, Aldo Leopold and Howard Zahniser dedicated their lives to protect the shrinking American wilderness.