By the 1850s, America's busiest ports were in New England, many with dozens of whale ships embarking on hunting expeditions every week.
America's west coast was also home to hundreds of whale ships. Pacific voyages departed from San Francisco, California and Honolulu and Lahaina, Hawaii with the greatest regularity.
President Theodore Roosevelt was caught in the middle of the first major battle for wilderness preservation in Yosemite National Park.
Today one of the most-recognized figures in American literary history, poet Walt Whitman was denounced by critics in his own time.
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.
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 story of the farmers who dreamed of prosperity and lived through ten years of drought, dust, disease and death.
The American effort to relieve starvation in Soviet Russia in 1921 during the worst natural disaster in Europe in 500 years.
The contradictory history of a dam that became a statement of American power and prestige.