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TIL There is a 100-year-old woman still teaching math at her elementary school in Brooklyn

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VMPB TIL That orange juice tastes bad after brushing your teeth due to Sodium lauryl sulfate (SLS) the foaming agent in toothpaste.
GY7oG TIL that laughing while being tickled is actually a defensive mechanism because our bodies anticipate pain and automatically try to show submission to an aggressor.
6NGm TIL in 1924 there was a steam powered car which could reach over 100 miles per hour, and it achieved about fifteen miles per gallon of kerosene with negligible emissions.
4kMAb TIL there was an early 1900s act named "Sober Sue", who's draw was she never smiled. A theater offered $1000 to any one who could make her laugh, attracting big comedians. Crowds came out to watch them try, and fail, giving them a free show. Later it came out that Sue suffered from facial paralysis.
LkwBP TIL a study found that beards are capable of lessening the damage from blunt force trauma; researchers postulate that men may have evolved beards for protection against male competition.