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TIL sharks are 90 million years older than trees

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QJvBk TIL in the 19th century, profit-maximizing recipe used by milk producers was a pint of lukewarm water for every quart of milk—after the cream was skimmed; To whiten the bluish liquid they added chalk and to replace skimmed-off layer of cream, they might add a final flourish of pureed calf brains
X0r6X TIL Thomas Knoll built an image processing program to help with his Ph.D. work. With inputs from his brother John, he built a software package. Initially, they licensed the distribution rights to Adobe & 7 years later (in 1995) sold the rights to Photoshop for $34.5m. Thomas never finished his Ph.D.
BrVmk TIL that in the 1950s, psychologist Milton Rokeach performed an experiment in which three men with Messianic delusions lived together for two years. He wanted to study how they would reconcile their delusions with the existence of two others with the same irrational belief.
mpmp TIL that in 1900, Italian King Umberto met a restaurant owner who looked exactly like himself. After speaking, they learned that they were born on the same day, of the same year, in the same town, and married a wife of the same name. They would both go on to be murdered the next day.
NX7r8 TIL that the Moon emits a constant tail of sodium. When small meteorites hit the surface of the Moon, the sodium from the dust that is emitted is picked up by the solar wind and blown away in a specific direction.