The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
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
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The strangers in your dreams are actually people that you've seen in real life.
50
A cow produces around 200,000 glasses of milk in her lifetime.
373
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