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
Your thumb is about the same size as your nose.
124
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Cows can sleep standing up, but they can only dream lying down.
745
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
The strangers in your dreams are actually people that you've seen in real life.
50
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82