Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Mushrooms are more closely related to humans than they are to plants.
47
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
The human body contains over a billion miles of DNA.
147
Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
34
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
A human being loses an average of 40 to 100 strands of hair a day.
133
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198