Your fingernails grow faster in summer.
744
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
The human brain uses approximately as much energy as a 10 watt light bulb.
120
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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