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TIL of the Mosquito machine and ringtone. The machine emits a high-pitched buzz that drives away loiterers and can be tuned to be heard only by teens. The ringtone, created by sampling the machine tone, uses the same buzz to make phones ring without being heard by teachers or another adults.

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MeQZV TIL The M1_Abrams was able to run on Jet Fuel, along with diesel, kerosene, and any grade of motor gasoline.
VkL0 TIL In 1968 a car, transporting 300M Yen (9M USD) was pulled over by a motorcycle cop claiming that the car had been rigged with explosives. The cop got under the car to defuse the device. When the car started to smoke, everybody ran. Then the ‘cop’ just drove away. The robbery remains unsolved.
1VnD TIL that when Robert Bloch wrote a story killing off Cthulu, H.P. Lovecraft wrote a story killing off Robert Bloch.
BgZDb TIL Hunter S Thompson was a uncredited co-creator of Nash Bridges and collected royalties from the show
E1B9X TIL Bing Crosby has the most number 1 hits all time (43) 2: Beatles (24) 3: Elvis(18). Most charted songs (396) 2: Sinatra (209) 3: Elvis (149). His movies have over 1 billion tickets sold (3rd all time). He has 1 Oscar for Best Actor and sang on 13 Oscar nominated songs (4 Winning).