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TIL That Jellyfish Can Shut Down Nuclear Reactors

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oBg5K TIL that the 1993 film Demolition Man jokes that Arnold Schwarzenegger serves as President of the United States in the future. Coincidentally, a day short of exactly ten years after the film's release, Schwarzenegger was elected as Governor of California.
p8P1O TIL of a sidewalk curb in Hayward, California that unintentionally marked the progression of a fault line for decades - until the city infrastructure department unknowingly paved over it.
PY5EG TIL that the Byzantine emperor Basil II captured over 15,000 Bulgars. He ordered 99% of the prisoners to have both of their eyes gouged out, and left the 1% with one eye left to guide the others back to their king. This is how Basil earned the title "the Bulgar Slayer"
bBKj TIL NASA built a wind tunnel in 1965 that could reach speeds of Mach 50.
WkRv9 TIL The Roman – Persian wars are the longest in history, lasting over 680 years. They began in 53 BC and ended in 627 AD.