You forget 90% of your dreams.
256
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Cows can sleep standing up, but they can only dream lying down.
745
The strangers in your dreams are actually people that you've seen in real life.
50
Your body is creating and killing about 2.4 million red blood cells per second.
17