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TIL the concept of contact lenses was conceived in 1823 and was realized in 1887. The original lenses weren't meant for sight correction. Instead they were used to protect diseased eyes.

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via reddit.com

xVv5 TIL that a psychologist attempted to raise a chimpanzee named Lucy as a human being. One day, he walked into her room and was shocked to find her masturbating to a copy of Playgirl.
KBBB TIL that not only do microwave ovens not “cook out” nutrients in food, they can sometimes do a better job of preserving nutrients.
wG7M TIL that in 1773 a man named Wolraad Woltemade saved 14 people stranded on a sinking ship by riding his horse, Vonk, out into the water to fetch them. Upon reaching the ship the seventh time the horse was exhausted. Wolraad, Vonk and those clinging onto him all drowned.
WV8X TIL Albert Einstein once used a $1,500 check from Rockefeller Foundation as a bookmark, and then he lost the book.
VvBm TIL: Killer Whales, aka Orcas, are actually not whales–they’re the largest member of the Dolphin family.