Your fingernails grow faster in summer.
744
The average sperm cell swims at 8 inches per hour.
4
A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
23
The average person will go on a date at least 100 times before they finally marry.
33
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Gorillas can catch human colds and other illnesses.
205
Babies crawl an average of 200m a day.
212