Her 1963 warnings about the effects of pesticides and herbicides - especially DDT - sparked a revolution in environmental policy and created a new ecological consciousness.
The American effort to relieve starvation in Soviet Russia in 1921 during the worst natural disaster in Europe in 500 years.
The inspiring story of the modern environmental movement.
The most daring and innovative accomplishment at the turn of the 20th century.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
The epic battle waged over dinosaur fossils by rival paleontologists in the American 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 story of the farmers who dreamed of prosperity and lived through ten years of drought, dust, disease and death.
The life of the legendary photographer, known best for his black and white images of the wilderness of the American West.