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TIL in every whale's earwax is a record of its lifetime exposure to pollutants.

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e0GY5 TIL two thirds of Argentina's population is of Italian heritage. They fled there for economic opportunities and to escape devastating wars. It is the only other country besides Italy with an Italian heritage majority population.
OoMgX TIL that Samurai wore clothes dyed with indigo because it makes them antibacterial, flame resistant up to 1500 degrees Fahrenheit, and repels odor and dirt.
XWxP TIL “eye of newt” in Macbeth is just a term for mustard seed
JYdnj TIL The Fisher Pen Co. patented a sealed, pressurised ink cartridge for the anti-gravity pen in 1966. The "thixotropic” ink is close to a solid before being stirred & as it's stirred by the ball going through the point, it becomes very thin which allows it to flow in the gravity-free vacuum of space
wLkEY TIL the "Dog Days of Summer" doesn't have to do with dogs laying around during the hottest days of the year, but the location of Sirius in the night sky