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TIL that a bullet fired from a rifled barrel spins at 300,000RPM (5000 rotations per second)

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dxQQ TIL that one cheap sleeping option for the homeless in London during the depression was sleeping on a clothesline. For twopence one could lean on a rope strung from one wall to another in a hostel. A “valet” would cut the rope at 5 am.
WkEPY TIL Gene Roddenberry named Star Trek villain Khan Noonien Singh after a long-lost Chinese pilot he befriended during WWII in hopes that his friend would contact him. He never did
XY7D TIL The ZIP in ZIP Code stands for Zone Improvement Plan
4Dy5 TIL that in the ancient Persian Empire, an idea was debated twice: sober and drunk. The idea first had to sound good in both states of mind before being considered a good idea
aOGo TIL the three mile limit for international waters was created as this was the maximum distance a cannon ball could travel from the shore.