When an earthen dam broke without warning, a small city in Pennsylvania was swept away in a wall of water over 30 feet high.
The journey of Prince Maximilian, German naturalist, and artist Karl Bodmer, who explored the Mississippi River area from 1832-1834.
The American effort to relieve starvation in Soviet Russia in 1921 during the worst natural disaster in Europe in 500 years.
A daunting story of shipwreck, starvation, mutiny and cannibalism amongst a group left abandoned in the high Arctic.
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.
Before radar had been invented a devastating hurricane hit America, surprising residents of the East Coast and killing more than 600 people.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
President Theodore Roosevelt was caught in the middle of the first major battle for wilderness preservation in Yosemite National Park.