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TIL in 2011, NYPD officer Patrick Luca was in a kayaking accident with his son Caden, 5. Caden had a life jacket, but Patrick didn’t. His last words were, “Keep blowing that whistle until someone finds you. Daddy is going to go under water now, and not come back up. Daddy is going to heaven.”

GYLxJ TIL the guard of the tomb of the unknown solider does not wear any rank insignias so as to not outrank any of the "unknown" soldiers.
mo4E TIL the US used survivorship bias to improve airplanes in World War II. The bullet holes in returning aircraft represented areas where a bomber could take damage and still fly, while bullet-free areas needed reinforcement.
p8aWN TIL near Frankfurt in central Germany, a cheese is served that is topped with raw onions, which is locally known as "hand cheese with music". When strangers ask why it is called this way, they are told "the music comes later". This is a running gag pointing at the farts caused by the onions.
8eQ1G TIL Poltergeist, which came out in 1982, was rated PG. This is despite not just the movie fitting perfectly into the horror genre, but also many adult themes including the smoking of marijuana and a deep dive into the occult.
wowYP TIL that Machu Picchu is earthquake resistant. The Incans created an engineering technique called ‘ashlar masonry’, where rocks are cut to fit perfectly together without mortar. This allowed the stones to move in its place during an earthquake, before settling back in their original positions