For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Hot water can freeze faster than cold water.
181
Denmark has twice as many pigs as there are people.
66
In 1992, 29,000 rubber ducks washed off a ship. They were found thousands of miles away 8 years later.
707
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492