The human sigh acts as a physiological reset button.
23
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
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
The human brain uses approximately as much energy as a 10 watt light bulb.
120
If the human eye was a digital camera, it would have 576 megapixels.
25
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
You can't tickle yourself.
29