The average sperm cell swims at 8 inches per hour.
4
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
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
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
One human hair can support 3 ounces.
191