An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
165
Your body is creating and killing about 2.4 million red blood cells per second.
17
The strangers in your dreams are actually people that you've seen in real life.
50
Mars had an oxygen-rich atmosphere around 4 billion years ago
13