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TIL that the ancient Romans used concrete with volcanic ash mixed in, which allowed for much stronger crack-resistant concrete

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XNBQ TIL a pig named Lulu saved her owner’s life while the woman was having a heart attack. The pig heard the cries of pain, forced her way out of the yard, ran into the road and played ‘dead’ to stop the traffic. A driver stopped, the pig let him to the trailer, he heard women and called 911.
16Dmr TIL: There was a Roman pharmacologist named Sextius Niger who wrote that you can increase sexual desire by eating salamanders that were preserved in honey. He was also head of a school of philosophy known as the School of the Sextii which recommended vegetarianism.
awAOy TIL about Bill Richmond, a black slave who fought alongside the British during the Revolutionary War. He later moved to England where he became one of the world's most famous bare-knuckle boxers. An articulate, respected man, he married a white woman and attended George IV’s coronation.
1aVQV TIL that the popular Christmas song "Rockin' Around the Christmas Tree," played in films like Home Alone and having the vocals of an apparently adult woman, was actually sung by a 13-year-old girl.
9YeQ7 TIL Austria does not usually allow dual citizenship but they made a special exception for Arnold Schwarzenegger in 1983 when he became U.S. citizen