Cows can sleep standing up, but they can only dream lying down.
745
The oldest glowing lightbulb was first switched on in 1901 and lives in fire stations in Livermore, CA. It is known as the Centennial Light.
118
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Your thumb is about the same size as your nose.
124
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18
A cow produces around 200,000 glasses of milk in her lifetime.
373
The strangers in your dreams are actually people that you've seen in real life.
50