› added 1 year ago

66

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

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RPm1 TIL that Plan B doesn’t work on women weighing over 176Lb (79Kg) or after ovulation.
POlL TIL Germany has a “Codetermination” law that balances the interests of workers and capitalists by allowing workers to elect half the board directors in any corporation larger than 2000 people. In corporations between 500 and 2000 people, the workers can elect 1/3 of the board of directors.
yQLQe TIL “E pluribus unum” (Latin for "Out of many, one" and in use since 1776) was replaced by Congress in 1956 with “In God we trust” as the official motto of the USA.
xVLvk TIL the older we get, the area in the brain responsible for filtering noises in the background and make us concentrate gets weaker. that's why elderly people have trouble driving. They focus too much on the background of moving objects, and not enough on the actual moving objects in the foreground
loo6N TIL Infamous sound barrier-breaking pilot Chuck Yeager happened to take down one of the world’s first jet fighters in WWII, so he gets to say, “The first time I ever saw a jet, I shot it down."