› added 2 years ago

72

TIL that ice at -50°C is as hard as glass

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JXJ1 TIL that until 11,000 years ago milk was toxic to humans, that the only way we could consume it was lowering the lactose levels by turning it into cheese, that today only one third of adults are lactose tolerant, and that the closer you get to the equator the lower the tolerance level is.
E1yGX TIL: The stopper on a keg is called the "bung", aka "bung plug". It is placed inside the bung hole to seal the keg.
Lxgm TIL that the smell of women’s tears will reduce men’s sexual arousal and testosterone levels.
kwAE TIL that John F. Kennedy’s official presidential portrait depicts him in a pensive state because the painter, Aaron Shikler, did not want to paint the eyes of a dead man.
N7Ol8 TIL that a zookeeper secretly grew a cannabis plantation inside the rhino enclosure at an Austrian zoo for years. He was the only one who had access to the enclosure and police made the discovery after a tip from a drug user.