Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252
Mushrooms are more closely related to humans than they are to plants.
47
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
If the human eye was a digital camera, it would have 576 megapixels.
25
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307