President Theodore Roosevelt was caught in the middle of the first major battle for wilderness preservation, over the building of Hetch Hetchy Dam in Yosemite National Park.
During the Great Depression, Americans built the Hoover Dam, one of the greatest engineering works in history.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
A year in the life of Wyoming cowboys and the ranching families of the American West.
Three years before the Gold Rush, 87 pioneers took a shortcut westward to California, only to get caught in the snows of the Sierra Nevada.
The remarkable story of how a railroad was built connecting California to the East.
This stunning film portrait of Yosemite National Park uses the 1851 diary of the first expedition of soldiers into the Native American territory.
The epic battle waged over dinosaur fossils by rival paleontologists in the American West.
The American effort to relieve starvation in Soviet Russia in 1921 during the worst natural disaster in Europe in 500 years.