› added 9 years ago

607

TIL that before and during WW1 there used to be male and female tanks!

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N7A5b TIL the 'Butterfly Effect' can be traced back to a short story called 'A Sound of Thunder', written by Ray Bradbury in 1952.
mkOP TIL that in 2009, for the first time in world history, the number of people living in urban areas surpassed the number of people living in rural areas.
X051Q TIL Neil Armstrong thought they had a 90 percent chance of getting back to Earth but only a 50-50 chance of making a successful moon landing on the first attempt. There were too many unknowns in descending from lunar orbit down to the surface that hadn't been demonstrated by testing
OGb04 TIL 39-year-old Gretchen Molannen committed suicide in 2012 after struggling for 17 years with a rare sexual disorder called persistent genital arousal disorder (PGAD), which is characterized by persistent, unwanted genital sensation or arousal that can be devastating for sufferers.
m1gEv TIL 12-14% of people are thought to have borderline intellectual function, somewhere between disabled and average.