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TIL Paris has many public drinking fountains that produce sparkling water

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e0r6D TIL the American Civil War was the deadliest armed conflict in the country's history, resulting in 750,000 combined civilian and military casualties, which at the time (1860) represented 3% of the total population. By comparison, WW2 resulted in 405,399 casualties.
d8DWd No one is entirely sure. Water has high surface tension, yet the molecules at its surface are unstable, which makes the air-surface interface mysterious and difficult to describe. Satoshi Nihonyanagi, a researcher at a molecular-spectroscopy lab in Japan, studies water and its surface—"specifically probing the interface," he calls it—using isotopically diluted H2O, which doesn't vibrate and is easier to observe. He's found that some water molecules are bound to others by a single hydrogen bond.
XGpE TIL: Platypuses have no teats, they secrete their milk through their pores.
1axA8 TIL kingdom hearts director Tetsuya Nomura and square Enix's hope that they can use Mickey Mouse as the main character, but Disney were particularly protective of their company mascot. In the end Disney allowed Nomura to use Mickey once, Which is shown in the end of kingdom hearts 1
Y7PEG TIL: Paleontologists call the stegosaurus’s distinctive set of four tail spikes the “Thagomizer.” The anatonomical structure was unnamed until Gary Larsen coined the term in a Far Side cartoon.