In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
The 300-year saga of the American whaling industry.
When an earthen dam broke without warning, a small city in Pennsylvania was swept away in a wall of water over 30 feet high.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
Vivid memories of those trapped in the terrifying temblor of 1906 that killed thousands of Californians.
Robert Marshall, Aldo Leopold and Howard Zahniser dedicated their lives to protect the shrinking American wilderness.
A daunting story of shipwreck, starvation, mutiny and cannibalism amongst a group left abandoned in the high Arctic.
A personal story of one family's dramatic effort to hold onto their family farm in Iowa as massive foreclosures sweep the nation in the 1990s.