An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Your thumb is about the same size as your nose.
124
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The strangers in your dreams are actually people that you've seen in real life.
50
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