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TIL That ancient Romans used to whiten their teeth with urine.

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KwDG TIL that the oldest living thing on Earth is 6,000 tons of grass
m1joE TIL, globally, people average 6 hours and 58 minutes of screen time per day.
mJWE TIL the term “mark” (for a gullible person) originated at carnivals when workers operating games of chance would give a patron a slap on the back with a dust covered hand, “marking” him as a sucker for other carnival operators.
K4Q6 TIL colonists in Jamestown resorted to eating a 14 year old girl during a particularly harsh winter known as the “Starving Time.”
Oog4e TIL upon being told that his Secretary of War, Edwin M. Stanton, had called him a "Damned Fool", Lincoln responded "Then I dare say, I must be one, for Stanton is generally right and he always speaks his mind."