One human hair can support 3 ounces.
191
A human being loses an average of 40 to 100 strands of hair a day.
133
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
The average person's skin weighs twice as much as their brain.
131