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A SpaceX rocket launch blew a temporary hole in Earth's upper atmosphere.

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xV9N7 TIL Roomba iRobot vacuums create maps of your home, put the info in the cloud where it's vulnerable to hackers and the CEO of the CO has considered selling the info the vacuums collect about your home.
M7eNm TIL the District of Columbia used to contain 3 municipalities. Alexandria was returned to Virginia in 1846 and Georgetown was merged with Washington in 1871.
grWb TIL Finnish WWII sniper Simo Häyhä, who killed 505 Soviet soldiers in less than 100 days, didn’t even use a telescopic sight.
GAMWj TIL that seagulls have a special gland that allows them to drink saltwater without getting dehydrated. This gland filters out the salt, which they then excrete through their nostrils. I found it fascinating because it shows how well-adapted these birds are to their coastal environments!
l7xLG TIL: Saad Abe was a famous Geisha, who after 2+ hours of intimacy and erotic choking, killed her lover, cut off his penis and balls and began carrying them around until her arrest and practiced necrophilia as she stated she loved him. The judge in the case admitted to being aroused by the story.