The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Gorillas can catch human colds and other illnesses.
205
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Only humans shed emotional tears.
331
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Enamel is hardest substance in the human body.
61
By weight, Bone is five times stronger than steel.
417