There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
26
If the human eye was a digital camera, it would have 576 megapixels.
25
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The human body contains over a billion miles of DNA.
147