Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
If Earth's history was condensed into twenty-four hours, life would've appeared at around 4am, land plants at 10:24pm, dinosaur extinction at 11:41pm, and human history would’ve began at 11:58:43pm.
21
Your body is creating and killing about 2.4 million red blood cells per second.
17
The strangers in your dreams are actually people that you've seen in real life.
50
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
11
Cows can sleep standing up, but they can only dream lying down.
745
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13