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
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Cows can sleep standing up, but they can only dream lying down.
745
A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140