The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
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 thumb is about the same size as your nose.
124
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
The strangers in your dreams are actually people that you've seen in real life.
50
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14