Only about 2% of the world population has green eyes.
36
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 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
The largest breed of rabbit is the Flemish Giant.
65
There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
11
Cows can sleep standing up, but they can only dream lying down.
745