The largest cell in the human body is the female egg and the smallest is the male sperm.
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There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Your fingernails grow faster in summer.
744
The average person's skin weighs twice as much as their brain.
131
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
26
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29