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Gills of three old specimens of webcap fungus (Cortinarius) in Gloucestershire, South West England. toxic, fungi, poisonous mushroom

7 of the World’s Most Poisonous Mushrooms

Statue of Nostradamus

Nostradamus and His Prophecies

A Factory Interior, watercolor, pen and gray ink, graphite, and white goache on wove paper by unknown artist, c. 1871-91; in the Yale Center for British Art. Industrial Revolution England

Inventors and Inventions of the Industrial Revolution

Los Angeles Police Department wanted flyer on Elizabeth Short, aka the "Black Dahlia," who was brutally murdered in January 1947. The FBI supported the Los Angeles Police Department in the case, including by identifying Short through her fingerprints that

America’s 5 Most Notorious Cold Cases (Including One You May Have Thought Was Already Solved)

Queen Elizabeth II addresses at opening of Parliament. (Date unknown on photo, but may be 1958, the first time the opening of Parliament was filmed.)

All 119 References in “We Didn’t Start the Fire,” Explained

Watergate scandal. Richard M. Nixon. President Nixon gives a press conference and talks to the press, March 12, 1971.

9 American Political Scandals

Computer mapping, woman at early 1990s computer

Timeline of the 1990s

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logical relation transitive law symmetry reflexivity ordering binary relation commutative law distributive law equivalence relation associative law formal system theorem argument history of logic formal logic applied logic metalogic modern logic ancient logic philosophy of logic