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TIL Michael Keaton’s son writes hit songs for Madonna, Jason DeRulo, Demi Lovato and more...

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kJ7Dm TIL the famous "Tank man" from the tiananmen square protests was never identified.
Z8eoB TIL that in 2014, a high school student was suspended for two months for jokingly replying "Actually, yeah" to an internet post that asked if he made out with a teacher. He sued the school board for being unjustly suspended, and won a $425,000 settlement.
W7LrN TIL that the geologist Michel Siffre spent 2 months underground without time cues to study how his body clock adapted, repeated the experiment for even longer on himself and more subjects, and discovered that their bodies tended to switch to a 48-hour clock. In one case, one even slept 34 hours.
XEPnR TIL about sexy primes, which are prime numbers that differ from each other by 6.
jNwvR TIL that while modern child-proof lids were invented in 1967, archaeologists discovered a container nearly 20 years later that was opened using a similar twist-off method. The vessel was found in the Mayan ruins of Río Azul in Guatemala and dated back to 500 BCE. It contained chocolate.