The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
No one knows Albert Einstein's last words. Just before he passed, he spoke several words in German, but his nurse only knew English.
154
A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140
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
A cow produces around 200,000 glasses of milk in her lifetime.
373
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
Cows can sleep standing up, but they can only dream lying down.
745
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165