President Theodore Roosevelt was caught in the middle of the first major battle for wilderness preservation in Yosemite National Park.
A daunting story of shipwreck, starvation, mutiny and cannibalism amongst a group left abandoned in the high Arctic.
Robert Marshall, Aldo Leopold and Howard Zahniser dedicated their lives to protect the shrinking American wilderness.
Vivid memories of those trapped in the terrifying temblor of 1906 that killed thousands of Californians.
High on a granite cliff in South Dakota's Black Hills tower the huge carved faces of four American presidents: George Washington, Thomas Jefferson, Abraham Lincoln, and Theodore Roosevelt.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
The 300-year saga of the American whaling industry.
Today one of the most-recognized figures in American literary history, poet Walt Whitman was denounced by critics in his own time.