There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
The average sperm cell swims at 8 inches per hour.
76
A person can live without food for about a month, but only about a week without water.
156
There are about 1,400 different species of bacteria in your belly button.
10
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
22
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
In one day, adult lungs move about 10,000 litres of air.
11
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
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