The strangers in your dreams are actually people that you've seen in real life.
50
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
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