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
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
Pain occurs when sounds are above 130 db.
124
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92