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TIL popular foam mattresses contain shards of fiberglass, and you can be very fucked if you remove the removable top cover

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pk9G TIL that when a scientist attempted to blow the whistle on the FDA for approving an unsafe medical device, the FDA installed spyware to record his private emails and surfing activities, and then used the information to smear him and other whistleblowers.
Br84D TIL about Juan Pujol García, a double agent who tricked German leaders about the date and location of the invasion of Normandy which lead to its success. He was notable for having received distinction from both sides; the Iron Cross from the Nazis and membership of the Order of the British Empire
PBkL TIL that Filipino Martial Arts are considered the most advanced practical modern blade system in the world and are used by the U.S. Army, the Spetsnaz, and various branches of India’s military
X0JP TIL that cats and dogs prefer to listen to species-specific music that sounds grating and unnatural to the human ear. They may not like ordinary human music!
D1bZY TIL that King Victor Emmanuel III of Italy was called "little saber" because his short stature (1.53m) required his uniform to be equipped with a saber shorter than the ordinary in order to not touch the floor when it was attached to the belt.