If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Your thumb is about the same size as your nose.
124
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
In one day, adult lungs move about 10,000 litres of air.
11
The human sigh acts as a physiological reset button.
23
By weight, Bone is five times stronger than steel.
417
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22