In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The strangers in your dreams are actually people that you've seen in real life.
50
The oldest glowing lightbulb was first switched on in 1901 and lives in fire stations in Livermore, CA. It is known as the Centennial Light.
118
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
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Only about 2% of the world population has green eyes.
36