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TIL the special effect in sci-fi movies of a 2D ring of energy or matter emanating from an explosion is called the 'Praxis Effect', named after the visual effect of the explosion of the planet Praxis in Star Trek VI. Other uses include the seismic charges in Star Wars Attack of the Clones.

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R5DAa TIL of Walter M. Gibson, a 19th century adventurer who was a gunrunner in the Caribbean and imprisoned in the East Indies for fomenting rebellion, but while awaiting execution, had a vision of creating an island empire and escaped -- then tried to create that empire as Prime Minister of Hawaii.
lEd5 TIL that when a Ford plant pulled out of Green Island, NY the town seized it’s water-powered electrical turbine by eminent domain and now it provides electric to it’s residents for about 40% cheaper than surrounding areas. Most residents have electric heat.
nWGy9 TIL in 1982, 7 people in the Chicago area died after ingesting Tylenol capsules laced with cyanide. James William Lewis sent an extortion letter to Johnson & Johnson, demanding $1 million to "stop the killings." While he was convicted of extortion, he was never charged with the murders.
R5bx4 TIL that NBC will become the first "Big Three" network to not offer a soap opera in its on-air programming on September 12, 2022, when it will send "Days of Our Lives" exclusively to Peacock. The show has aired nearly every weekday since November 8th, 1965 and has over 14,000 episodes.
4XZVR TIL that when a trailer for "The Exorcist" was shown in theaters, it was reportedly so scary that people ran out of the theater , the trailer was banned, although you can watch it on YouTube.