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
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
The strangers in your dreams are actually people that you've seen in real life.
50
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Iceland has been so culturally isolated through history since the Vikings, that compared to other Scandinavian counties, people who speak Icelandic can still read the old Norsk sagas.
4