In the late 19th century, paleontologists Edward Cope and O.C. Marsh uncovered the remains of hundreds of prehistoric animals in the American West, including dozens of previously undiscovered dinosaur species. But the rivalry that developed between them would spiral out of control, permanently damaging their careers and threatening the future of American paleontology.
Before radar had been invented a devastating hurricane hit America, surprising residents of the East Coast and killing more than 600 people.
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.
During the Great Depression, Americans built the Hoover Dam, one of the greatest engineering works in history.
The New Deal program CCC put three million young men to work in camps across America.
A biography of the last outlaws of the American Wild West
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 life of the legendary photographer, known best for his black and white images of the wilderness of the American West.
It was the largest fire in American history.