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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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R50v8 TIL the same gene mutation responsible for dogs' friendly behavior compared to wolves' causes Williams syndrome in humans. This rare genetic condition is characterized by increased sociability but decreased cognitive ability.
d8xLr TIL actors Peter Sellers and Britt Ekland got married only 10 days after first meeting. 6 weeks later on location filming ‘Kiss Me, Stupid,’ Sellers inhaled poppers before sex with Ekland in search of “the ultimate orgasm” and suffered 8 heart attacks in 3 hours, forcing withdrawal from the film.
D7PJ TIL that Trey Parker and Matt Stone have made over 200 million dollars with Book of Mormon, roughly 19 million per month, which was enough money to start start their own production company.
neBor TIL that the Brontosaurus was thought to be a mistake, the creature had never existed. The animal was actually an Apatosaurus, a previously discovered dinosaur, and it should have had that name. Now it's been discovered that they actually are two separate animals, and the Brontosaurus exists again.
R5M51 TIL Beginning in early 1942, the Canadian government detained and dispossessed more than 90 percent of Japanese Canadians, some 21,000 people, living in British Columbia. They were detained under the War Measures Act and were interned for the rest of the Second World War.