In 2009, Burger King launched a campaign that if you unfriended 10 friends on Facebook, you were entitled to a free Whopper. The person you unfriended would get a message telling them that their friendship is worth less than a Whopper.
A full jumbo jet tank has enough fuel to drive a car around the world four times.
There is a fish with transparent bones and white blood.
Nutella was invented during WWII, when an Italian pastry maker mixed hazelnuts into chocolate to extend his chocolate ration.