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TIL that out of the 195 countries of the world (or their predecessor states) there are only 22 that the British Empire has not invaded

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groDb TIL about Project Genetrix which was a United States Air Force program designed to launch General Mills manufactured surveillance balloons over China, Eastern Europe and the Soviet Union to take aerial photographs and collect intelligence.
YpkEG TIL a 67-year-old neurosurgeon was "stereoblind" (unable to see depth) his entire life, but it was cured after he saw the movie "Hugo" in 3D at a movie theater. Afterwards he was permanently able to perceive depth.
VMBkZ TIL that "Ghostbusters" actor Dan Aykroyd is one of the founders of a popular brand of spirit named "Crystal Head Vodka"
Eg4Oo TIL being sleep deprived can cause sexual arousal in mammals.
xVJN1 TIL that the iPods come preloaded with games