More Facts, You Might not know!

1. Wearing headphones for just an hour will increase the bacteria in your ear by 700 times.
2. Grapes explode when you put them in the microwave.
3. Those stars and colours you see when you rub your eyes are called phosphenes.

Facts You Might not know

1. The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting. 
2. Until babies are six months old, they can breathe and swallow at the same time. Indeed convenient!
3. Offered a new pen to write with, 97% of all people will write their own name.