› added 9 years ago

484

TIL that we are in the middle of the sixth mass extinction called Holocene extinction

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GY8Lj TIL the USPS has a rule that full-service mailbox carrier signal flags should require no more than 2 pounds of force to raise and lower.
nap7 TIL A man tried to commit suicide by shooting himself in the head because of his severe OCD. But, the bullet didn’t kill him and destroyed the part of his brain that was responsible for his OCD. He then became an honors student at college five years later.
QNnXk TIL the book 'Theory of Games and Economic Behavior', by mathematician John von Neumann and economist Oskar Morgenstern, led to the creation of an entirely new field of research, known as game theory, which is the study of mathematical models of strategic interactions.
0dpZp TIL that tetrodotoxin (TTX), which makes pufferfish poisonous, may not be made by the pufferfish themselves. TTX is produced by marine bacteria in the natural pufferfish food chain, and pufferfish fed TTX-free diets become non-toxic. When TTX is re-introduced to the fish, they become toxic again.
QNdA9 TIL That the U.S. Supreme Court case of Dred Scott v. Sandford played a crucial role in the start of the American Civil War four years later.