Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Cows can sleep standing up, but they can only dream lying down.
745
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
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
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
A cow produces around 200,000 glasses of milk in her lifetime.
373
Mars had an oxygen-rich atmosphere around 4 billion years ago
13