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 300-year saga of the American whaling industry.
Robert Marshall, Aldo Leopold and Howard Zahniser dedicated their lives to protect the shrinking American wilderness.
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.
Today one of the most-recognized figures in American literary history, poet Walt Whitman was denounced by critics in his own time.
Vivid memories of those trapped in the terrifying temblor of 1906 that killed thousands of Californians.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
A daunting story of shipwreck, starvation, mutiny and cannibalism amongst a group left abandoned in the high Arctic.
The epic battle waged over dinosaur fossils by rival paleontologists in the American West.