Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
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
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
The world's shortest man measures only 21.5 inches.
73
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Early American humans hunted car-size armadillos and used their shells for houses.
12