The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
10 seconds is the amount of time until unconsciousness after the loss of blood supply to the brain.
108
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
Vaccines contain formaldehyde, ethylene glycol (antifreeze), phenol (disinfectant / pesticide), and aluminum.
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Household bleach is the recommended chemical to decontaminate people exposed to the anthrax virus, by the U.S. F.D.A.
16
Poor eyesight (myopia) is associated with higher IQ.
232
25% of your bones are located in your feet.
12