The Borglum family archives include some historic home movies, early color films of the mountain's sculpting in progress. See Gutzon and the workers in action as they struggle with winches, jackhammers -- and Mother Nature.
Robert Marshall, Aldo Leopold and Howard Zahniser dedicated their lives to protect the shrinking American wilderness.
When an earthen dam broke without warning, a small city in Pennsylvania was swept away in a wall of water over 30 feet high.
The epic battle waged over dinosaur fossils by rival paleontologists in the American West.
The journey of Prince Maximilian, German naturalist, and artist Karl Bodmer, who explored the Mississippi River area from 1832-1834.
Vivid memories of those trapped in the terrifying temblor of 1906 that killed thousands of Californians.
The inspiring story of the modern environmental movement.
This stunning film portrait of Yosemite National Park uses the 1851 diary of the first expedition of soldiers into the Native American territory.
The American effort to relieve starvation in Soviet Russia in 1921 during the worst natural disaster in Europe in 500 years.