If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
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
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
The human body contains over a billion miles of DNA.
147
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
Your fingernails grow faster in summer.
744