An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
If your DNA was stretched out it would reach to the moon 6,000 times.
256
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
The human sigh acts as a physiological reset button.
23
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
One human hair can support 3 ounces.
191