Cows can sleep standing up, but they can only dream lying down.
745
Your body is creating and killing about 2.4 million red blood cells per second.
17
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
A cow produces around 200,000 glasses of milk in her lifetime.
373