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TIL NASA engineers use Hawaiian lava fields to simulate conditions on Mars

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R7Krj TIL that in addition to being the Bishop of Rome, and head of the Catholic Churxh, The Pope is also King of Vatican City. Also, that the Vatican is one of only six absolute monarchies in the world.
x6BB1 TIL Alcohol isn't allowed on the International Space Station. It's not banned purely for intoxication or health risk. It's banned because alcohol is a volatile compound which can damage the ISS' water filtration system. NASA also bans mouthwash, aftershave and perfumes for this same reason.
l0yV TIL: there had been a “thirty years war” between Scientology and the IRS. Scientology Won
wY TIL that there are trees in Hawaii with natural rainbow-colored bark.
QNRPa TIL auto insurance premiums are 67% higher in New York State than the national average.