It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Every human spent about half an hour as a single cell.
144
Our brains have a negativity bias and will remember bad memories more than good ones.
15
Pain occurs when sounds are above 130 db.
124
The average person's skin weighs twice as much as their brain.
131
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
The world's shortest man measures only 21.5 inches.
73
One human hair can support 3 ounces.
191