President Theodore Roosevelt was caught in the middle of the first major battle for wilderness preservation in Yosemite National Park.
The contradictory history of a dam that became a statement of American power and prestige.
When an earthen dam broke without warning, a small city in Pennsylvania was swept away in a wall of water over 30 feet high.
Robert Marshall, Aldo Leopold and Howard Zahniser dedicated their lives to protect the shrinking American wilderness.
The most daring and innovative accomplishment at the turn of the 20th century.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
The American effort to relieve starvation in Soviet Russia in 1921 during the worst natural disaster in Europe in 500 years.
The New Deal program CCC put three million young men to work in camps across America.