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187

TIL Humpacks protect seals from Orcas by hiding them on top of their fins

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MeGEV TIL Louis Braille lost his sight at 5 years old after an accident trying to make holes in a piece of leather with an awl. 10 years later, he completed his system of reading and writing for use by the blind or visually impaired. Braille created his own raised-dot system by using an awl.
wo0bJ TIL that from 1264 to 1827, anyone who received a Master of Arts degree from Oxford had to swear that they would never forgive Henry Symeonis. By 1608, no one knew who he was or what he had done
R7JG6 TIL of the Chinese proverb "three men make a tiger", which means that people will accept absurd information, as long as enough people are saying it.
d84kd TIL according to declassified Soviet archives, during Stalin’s great purge of 1937/1938 over 1.5 million people were detained, of whom 681,692 were shot (an average of 1,000 executions a day). In comparison, the Tsarists executed 3,932 persons for political crimes from 1825 to 1910.
6ENO7 TIL, the Lead-crime hypothesis explains that the crime wave from 1970-1995 was mainly due to two generations being exposed to lead