Cows can sleep standing up, but they can only dream lying down.
745
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
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94
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
No one knows Albert Einstein's last words. Just before he passed, he spoke several words in German, but his nurse only knew English.
154
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3