Locations of American whaling vessels from 1790-1924, based on a sample of whalers' log books.
Many American whaling vessels kept records of their daily locations and details of their whale catches. Days without any catches are represented with light blue dots. Dark blue dots represent sperm whale catches; red dots represent right whale catches; purple dots represent humpback whale catches; green dots represent bowhead whale catches; orange dots represent gray whale catches; yellow dots represent unspecified whale catches.
For more information see our interview with Tim Smith, with the U.S. National Marine Fisheries Service.
Credit: Smith, Tim D, Judith N Lund, Elizabeth A Josephson, Randall R Reeves. In press. Spatial Dynamics of American Offshore Whaling in the 19th Century: Were sperm whales depleted? Whaling and History III. Kommander Chr. Christensens Hvalfangstmuseum, Sandefjord, Norway.
The epic battle waged over dinosaur fossils by rival paleontologists in the American West.
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 journey of Prince Maximilian, German naturalist, and artist Karl Bodmer, who explored the Mississippi River area from 1832-1834.
Today one of the most-recognized figures in American literary history, poet Walt Whitman was denounced by critics in his own 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.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
The New Deal program CCC put three million young men to work in camps across America.
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.