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TIL the twin towns of Laufenburg, split by the High Rhine, built a bridge in 2004. Different sea level references—Mediterranean for Switzerland, North Sea for Germany—led to a 270 mm difference, which a sign error doubled to 540 mm in the middle of the bridge.

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08Lp TIL that the original abbreviation of the National Socialist Party was Nasos. The word “Nazi” derives from a Bavarian word that means “simple minded” and was first used as a term of derision by journalist Konrad Heiden
ep5Kk TIL that in 2001, a Boy Scout got lost near Yellowstone and ended up spending the night in a cave. In the morning, he woke to the sound of a helicopter and managed to get the pilot's attention. Upon boarding the helicopter, he was shocked to see the pilot was none other than actor Harrison Ford.
nWyNG TIL A married couple, Henry and Holly Stephenson, was hired by the MLB from 1981-2004 to draw up each season's baseball schedule. They were responsible for scheduling 2,430 games played by 30 teams.
nW9pd TIL Water has a density anomaly: Up to 4°C, its density actually increases. Warmer water is denser which makes it go down. That's why ice forms at the top of lakes, which insulates the rest of the water body, thereby protecting the aquatic life during harsh winters.
dDvb9 TIL Joseph Bazalgette, the man who designed London's sewers in the 1860's, said 'Well, we're only going to do this once and there's always the unforeseen' and doubled the pipe diameter. If he had not done this, it would have overflowed in the 1960's (its still in use today).