The human brain is more active during sleep than during the day.
28
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
You can't tickle yourself.
29
One human hair can support 3 ounces.
191
Our Right Lungs takes more air than our left lung.
194