Cows can sleep standing up, but they can only dream lying down.
745
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
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
A cow produces around 200,000 glasses of milk in her lifetime.
373
Your body is creating and killing about 2.4 million red blood cells per second.
17