The human brain uses approximately as much energy as a 10 watt light bulb.
120
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
There are about 255 babies born worldwide every minute.
46
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
26
Yawns are more contagious among people with closer relationships.
163