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TIL Jim Crow was not a real person, but a character played by a white actor performing minstrel routines.

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PVbg TIL the Great Stalacpipe Organ used Virginia’s Luray Caverns to produce music by striking the cave’s stalactites with solenoid-actuated rubber mallets to produce sound. The organ can be heard anywhere within its 64-acre (260,000 m^2) confines
D1yOV TIL John Carpenter filmed twelve minutes of additional material during the production of Halloween II for scenes to be added into the TV broadcast of Halloween. The extra scenes were filmed so Halloween would fit into a two hour time slot on NBC.
7Mw7 TIL that PETA kills 89% of the animals it takes in
dD0oB TIL Traditional Moroccan sinks, bathtubs, water vessels, and many interior surfaces are literally made out of soap scum—the traditional soap-treated lime plaster “Tadelakt” is formulated for its water repellent properties and contains the same compounds as soap scum (Ca stearate, Mg stearate, etc).
Zpexv TIL that, in a resting state, the brain consumes about 20% of the body's energy. The sight and hearing parts of the brain consume far more energy than parts used for smell and memory. Also, white matter only uses 20-25% of energy as gray matter.