Only about 2% of the world population has green eyes.
36
A cow produces around 200,000 glasses of milk in her lifetime.
373
Your thumb is about the same size as your nose.
124
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165