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TIL about the “Behavioral Sink” - a term invented by John B. Calhoun to describe a collapse in behavior that can result from overpopulation

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6EKYl TIL that late 19th century American Congressman Lucas Miller argued that ''it is possible for the Republic to grow through the admission of new States into the Union until every Nation on Earth has become part of it.'' He also proposed abolishing the Army and Navy
691NZ TIL The barreleye fish, also known as the spook fish, has a transparent head filled with fluid. This unique feature allows its barrel-shaped, tubular eyes, which are normally directed upwards to detect the silhouettes of available prey, to also rotate forward.
LeQv TIL that the nomadic “hunter-gatherer” phase of humanity makes up over 90% of Homo Sapien history. Civilisation and recorded history have existed for a tiny fraction of the time that our species has existed.
jNXMp TIL in 1920s - 1960s Germany, there was a trend to pose in a photo with a person in a polar bear costume. In thousands of photos, the bear doesn't change much in looks or poses, but history advances around the polar bear: from smiling beachgoers to smiling Nazis to smiling American G.I.s.
loGRr TIL that due to his acting roles in many Marvel movies, the late Stan Lee is the highest-grossing actor of all time. With a total box office gross as an actor at $30,617,384,366. The second highest grossing actor is also a Marvel movie star, Samuel L. Jackson of Nick Fury fame.