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TIL that Muhammad Ali was vehemently anti-interracial marriage

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XEDy6 TIL of the Shepard Tone, a musical technique that creates the auditory illusion of a tone that continually ascends or descends in pitch, yet which ultimately seems to get no higher or lower.
W70GX TIL that Canada produces over half of the world's lentils.
aBBL TIL the country with the most favorable view of the US is the Philippines, as of July 2013
LQ0lZ TIL that the first presentation of Tourette syndrome (a neurological disorder characterised by the presence of motor and vocal tics) is thought to be in the 15th-century book Malleus Maleficarum, which describes a priest whose tics were "believed to be related to possession by the devil".
kdL1 TIL that the ruins of a 2,300-year-old Mayan Temple in Belize were destroyed by contractors who wanted to use the bricks for gravel to build a road.