Her 1963 warnings about the effects of pesticides and herbicides - especially DDT - sparked a revolution in environmental policy and created a new ecological consciousness.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
Vivid memories of those trapped in the terrifying temblor of 1906 that killed thousands of Californians.
Before radar had been invented a devastating hurricane hit America, surprising residents of the East Coast and killing more than 600 people.
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.
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 most daring and innovative accomplishment at the turn of the 20th century.
The epic battle waged over dinosaur fossils by rival paleontologists in the American West.
This stunning film portrait of Yosemite National Park uses the 1851 diary of the first expedition of soldiers into the Native American territory.