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TIL that All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye’s lens. Patients who undergo surgery to remove the lens can detect ultraviolet light.

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41DJ TIL: A study by the Kobe University Graduate School of Medicine using a randomized double-blind trial with sensory evaluation using discrimination testing found that freezing raw fish did not ruin sushi’s taste.
149d TIL that when King Kamehameha of Hawaii died in 1819, his body was taken and buried in secret in accordance with Hawaiian tradition to preserve his mana. To this day, his body has not been found and people only speculate on it’s location.
V5DQ TIL A KKK Grand Dragon, confined to a wheelchair, had been threatening a local rabbi. The rabbi responded by offering the man compassion, friendship, and transportation around town. They became friends and the Grand Dragon eventually quit the KKK and converted to Judaism.
e066b TIL that a number of private US universities (including Harvard, Cornell, Columbia, Pennsylvania, and Yale) had quotas on the maximum number of Jews to be admitted. In 1935, Yale's Med School Dean stated: "Never admit more than five Jews, take only two Italian Catholics, and take no blacks at all."
epa44 TIL the Bruce effect, or pregnancy block, is the tendency for female rodents to terminate their pregnancies following exposure to the scent of an unfamiliar male. The effect was first noted in 1959 by Hilda M. Bruce and has primarily been studied in laboratory mice.