A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
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
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
Mars had an oxygen-rich atmosphere around 4 billion years ago
13