If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
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
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
The human sigh acts as a physiological reset button.
23