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TIL of Yi Qi, a small feathered and winged dinosaur. While many dinosaurs had feathers and what could be called “wings” in a sense, Yi Qi had a bat-like membrane connecting its third finger to its side, making it look like a real world dragon (or wyvern for pedantry).

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4kg TIL that Tesla said that if you stick a rod far enough into space the temperature difference would create an electrical current and a motor could be run off it and that this (while not doing any work itself) did not violate the second law of thermodynamics.
nWVJP TIL a car feature known as limp mode can activate when a car's computer detects an issue that could damage the engine or transmission. The computer can then limit the throttle and RPM and can put the car into a fixed gear - usually second or third - to limit how fast the car can drive.
lonwK TIL Dolly Parton gave each family who lost its primary residence in the 2016 TN fires $1,000 a month for five months. When she arrived to help dole out the final payments, she brought the nearly 900 families an unexpected bonus – another $5,000 each for a total of $10,000.
dVlK TIL when Yuri Gagarin landed after his famous spaceflight, the only people nearby were a farmer and her daughter. He looked like frightening in his orange space suit, so he said “Don’t be afraid, I’m a Soviet citizen like you, who has descended from space and I must find a telephone to call Moscow!”
e0OG5 TIL Mount Rushmore was created by sculptor Gutzon Borglum. Washington, Jefferson, Roosevelt, & Lincoln were chosen to represent America's birth, growth, development, & preservation respectively. Mount Rushmore attracts more than 2 million visitors annually.