If your DNA was stretched out it would reach to the moon 6,000 times.
256
The human sigh acts as a physiological reset button.
23
A human being loses an average of 40 to 100 strands of hair a day.
133
Your heart will pump about 212 million liters in its lifetime.
26
Mushrooms are more closely related to humans than they are to plants.
47
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Early American humans hunted car-size armadillos and used their shells for houses.
12