Your spit has a painkiller 6 times stronger than morphine. It contains a substance called opiorphin that is stronger than morphine.
39
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The hole in the soda can tab is actually used to hold a straw in place and stop it from rising.
27
Strawberries are in the same plant family as roses.
13
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
The four ghosts in Pac-Man are programmed to act differently: red chases you, pink just tries to position itself in a set way, blue tries to ambush you and orange is random.
21