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TIL that historically an 'outlaw' was someone who was no longer protected by the law as punishment for a crime, allowing members of the public to legally persecute them at will

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JDX1 TIL in 1998, a woman hit and killed a cyclist when she was distracted by her Tamagotchi.
5YbKR TIL women's fallopian tubes are mobile parts of the reproductive tract. If a woman has one tube removed the remaining tube can travel to the opposite ovary to pick up eggs.
Wab4 TIL that the Wahgi people of Papua New Guinea paint their shields with images of the Phantom comic book character after American GIs shared their comic books with tribe members during World War II
wQP6 TIL that at temperature below -20 degrees C emperor penguins form a huddle like the rugby players to stay warm. The temperature inside the huddle sometimes gets so hot (37 degree C) that some penguins come out or eat ice to cool off a bit.
mxreY TIL in 2012 three researchers proved that many classic Nintendo games are NP-hard by developing a framework for reducing the 3SAT problem to any platform game. This means the question "given a finite level of a game, can the player move from start to finish?" is not computable in polynomial time.