There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
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
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
In one day, adult lungs move about 10,000 litres of air.
11
There's 100 trillion good bacteria living in your body.
17