Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
A person can live without food for about a month, but only about a week without water.
156
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
Our brains have a negativity bias and will remember bad memories more than good ones.
15
On average, there's 100 billion neurons in the human brain.
83
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456