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  1. How do QR codes work? (I built one myself to find out)

    How do QR codes work? (I built one myself to find out)

    43
  2. The Man Who Accidentally Killed The Most People In History

    The Man Who Accidentally Killed The Most People In History

    2
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    288
  5. Why is this number everywhere?

    Why is this number everywhere?

    24
  23. How Do Night Vision Goggles Work? (There's 3 types)

    How Do Night Vision Goggles Work? (There's 3 types)

    30
  24. The Trillion Dollar Equation

    The Trillion Dollar Equation

    40
  25. People said this experiment was impossible, so I tried it

    People said this experiment was impossible, so I tried it

    25