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TIL about Poland Syndrome, a medical birth defect where part of the individual’s chest muscles are missing during birth.

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XEBAr TIL NASCAR is Rooted in Prohibition Bootlegging
R50NQ TIL that the massive sound pollution of, say, pile-driving underwater to build bridges can be dramatically reduced with "air bubble curtains," to the point that fish which would have been killed by the shockwaves before are no longer affected
N7oAE TIL in the 60's Capel Celyn, Wales was flooded to provide drinking water to Liverpool forcing the inhabitants to leave. After the flooding the English MPs had a tea party on location which was quickly destroyed by the furious villagers. This launched a Nationalist movement which continues to grow.
Ldmp TIL that the City of São Paulo bans any public forms of advertisements. The law called “Clean City Law” or “antibillboard” which aims for a cleaner, more serene environment.
OpdX TIL Antarctica’s largest land animal is a 2mm-long insect called Belgica antarctica, the only insect on the continent.