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TIL 3D printed objects can be made to connect to WiFi without electronics

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ndJ9 TIL A woodpeckers tongue wraps around its head to prevent it from getting headaches when slamming its face into trees
x6bV1 TIL: scholars Karl Popper and Wittgenstein once argued whether philosophical problems existed. After Popper said moral rules were legitimate problems, Wittgenstein pointed a fire poker at Popper, daring him to give an example, to which Popper replied: Not to threaten visiting lecturers with pokers
GA5W4 TIL The first Presidential Car to pass Secret Service demands was the Sunshine Special - a V12 1939 Lincoln Model K limousine that was used as the official state car by United States presidents Franklin D. Roosevelt and Harry Truman which cost only $108,426 in 2023 dollars.
Oodwa TIL that Smokey Bear's name was inspired by "Smokey" Joe Martin, a New York firefighter who suffered burns and blindness during a 1922 rescue. Also, the symbol of the U.S. Forest Service is actually just "Smokey Bear," not "Smoke the Bear." The "the" was added to help the rhythm of a 1952 song.
neQ0G TIL, the Shibuya Crossing, located in the Shibuya Ward, Tokyo, is said to be the busiest pedestrian intersection in the world. At peak times, over 1000 people cross at the same time, coming from all directions, and there is almost no loss of foot traffic at midnight or early morning.