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Automatic gristmill patent Detailed plans from the Wright brothers' patent application.
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Close up of praying mantis walking on stone ground against a blurred background in Japan
6 Animals That Eat Their Mates
Leonardo da Vinci (1452-1519), Italian Renaissance painter from Florence. Engraving by Cosomo Colombini (d. 1812) after a Leonardo self portrait. Ca. 1500.
10 Famous Artworks by Leonardo da Vinci
Salem Witch Trials. Photogravure after the painting by Walter McEwen titled - The Witches - circa 1890s.
How Rye Bread May Have Caused the Salem Witch Trials
Lake Mead (the impounded Colorado River) at the Hoover Dam. The light-coloured band of rock above the shoreline shows the decrease in water level in the first few years of the 21st century.
6 Lakes That Are Drying Up
Portion of the Aleppo Codex, a manuscript of the Hebrew Bible written in the Hebrew language in the 10th century CE; in the Shrine of the Book, Israel Museum, Jerusalem.
Why Do Languages Die?
African Americans demonstrating for voting rights in front of the White House as police and others watch, March 12, 1965. One sign reads, "We demand the right to vote everywhere." Voting Rights Act, civil rights.
Timeline of the American Civil Rights Movement
airplane in flight (plane, aircraft, flying)
7 Puzzling Plane Disappearances

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Key People

Richard D. Murdock
American businessman
John Stevens, oil on panel, attributed to John Trumbull; in the collection of the Stevens Institute of Technology
John Stevens
American inventor and lawyer
Samuel Blatchford
United States jurist