Mars had an oxygen-rich atmosphere around 4 billion years ago
13
There are so many kinds of apples that if you ate a new one everyday, it would take over 20 years to try them all.
34
A cow produces around 200,000 glasses of milk in her lifetime.
373
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 body is creating and killing about 2.4 million red blood cells per second.
17
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31