Vivid memories of those trapped in the terrifying temblor of 1906 that killed thousands of Californians.
In 1927, the Mississippi River flooded from New Orleans to Illinois, leaving a million people homeless and leading to a major black migration to the North.
The New Deal program CCC put three million young men to work in camps across America.
The American effort to relieve starvation in Soviet Russia in 1921 during the worst natural disaster in Europe in 500 years.
The epic battle waged over dinosaur fossils by rival paleontologists in the American West.
The story of the farmers who dreamed of prosperity and lived through ten years of drought, dust, disease and death.
Robert Marshall, Aldo Leopold and Howard Zahniser dedicated their lives to protect the shrinking American wilderness.
The journey of Prince Maximilian, German naturalist, and artist Karl Bodmer, who explored the Mississippi River area from 1832-1834.