10 Hidden Facts You Need To Know

Facts
  • Did you know bulletproof vest, fire escapes, windshield wipers and laser printers were all invented by women?
  • It takes 17 muscles to smile and 43 muscles to frown.
  • If you wear headphones for one hour, it increases bacteria in your ears 700 times
  • You can’t fold a piece of paper in half more than seven times
  • A single drop of water contains one hundred billion atoms
  • “Dreamt” is the only English word that ends in letters “mt”
  • 111111 × 111111 = 12345654321
  • Seat belts became mandatory on USA cars on March 1, 1968
  • Men have nipples because, as an embryo, everyone is a female until the Y chromosome kicks in.

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