We share 70% of our DNA with a slug.
218
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
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
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
Early American humans hunted car-size armadillos and used their shells for houses.
12
The human brain uses approximately as much energy as a 10 watt light bulb.
120
The average person's skin weighs twice as much as their brain.
131