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TIL in 2013 two Iranian F-4 Phantoms attempted to intercept a drone escorted by two F-22 Raptors. Due to having a bumblebee-sized radar cross-section, an F-22 was able to fly underneath an F-4 to see its weapons without it noticing then flew next to the F-4 and radioed "you really ought to go home."

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Yp8mx TIL of Jaycee Dugard, an 11-year old girl who was kidnapped in 1991 only to be found when her kidnapper walked into a school in 2009 with two young girls claiming they were his daughters. They were in fact his daughters, their mother being Jaycee; a prisoner for 18 years and a mother at 14.
QJpbp TIL that "Tom's Diner" was the first song ever converted to MP3. "This song was chosen because of its nearly monophonic nature and wide spectral content, making it easier to hear imperfections in the compression format during playbacks. Some refer to Suzanne Vega as "The mother of MP3""
8eJjK TIL that the reason UK Pubs had stupid names, was so the illiterate patrons could find them with the artwork.
LkXvv TIL that children who are anxiously shy at an early age tend to display distinct patterns of brain activity in social situations at a later age. This manifests in the form of increased distress when anticipating unpredictable social feedback.
dNvQ TIL that during the Fukushima nuclear disaster, more than 200 retirees volunteered to replace younger workers at the facility. The volunteer group figures they have less than 20 years to live and will be dead before any radiation induced cancer develops.