Tigers can see 6 times better at night than humans.
305
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
All 13 minerals necessary for human life can be found in alcohol beverages.
282
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Poor eyesight (myopia) is associated with higher IQ.
232
The human eye blinks an average of 4,200,000 times a year.
233