Only about 2% of the world population has green eyes.
36
The University of Oxford (teaching since 1096) predates the Aztec empire (1428 - 1521).
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
You forget 90% of your dreams.
256
Not only are there rogue planets floating through space completely alone, not orbiting any stars, but it’s possible that these pitch-black lonely planets support life.
14
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21