Mars had an oxygen-rich atmosphere around 4 billion years ago
13
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
If you have 1 billion dollars and spend $1,000 every day, it would take you 2,740 years to go broke.
31
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13