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TIL Rapid ejaculator rats are more susceptible to anxiety compared with normal ejaculator rats

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Z8Qy4 TIL thousands of people of Jewish decent were conscripted or volunteered into the German army during WWII, some ending up in senior positions. Hitler personally signed off on the "declaration of German blood" for 77 high-ranking officers who had Jewish parents or were married to Jews.
1aRBV TIL the loudest sound in recorded history was the Krakatoa volcanic eruption in 1883. The sound was so loud that it ruptured the ear drums of people 40 miles away, traveled around the world 4 times, and was clearly heard 3,000 miles away
8ajL4 TIL about the Johnson Treatment, a strategy used by Lyndon B. Johnson to get legislation passed. Johnson, who was 6'4", would invade the personal space of the target and issue a disorientating stream of flattery, threats and persuasion that would leave the target unable to counter.
0dpmN TIL: One in four American cowboys were black
8aeVb TIL in the 1980s the Russian medical staff of the Algerian football team gave the players performance-enhancing drugs while playing for their country, without their knowledge or consent. Years later, the children of many players suffer from disabilities and mental health problems.