Only about 2% of the world population has green eyes.
36
Cows can sleep standing up, but they can only dream lying down.
745
A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
Your body is creating and killing about 2.4 million red blood cells per second.
17
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
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