The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
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
The average person in their lifetime will spend an estimated 20,160 minutes kissing!
212
Cows can sleep standing up, but they can only dream lying down.
745
Mars had an oxygen-rich atmosphere around 4 billion years ago
13