When swans go on a date, they'll put their heads together. Then they stick together for life. See more

Hot water weighs less than cold water for a given volume. See more

The tune of The Star Spangled Banner was an old English drinking song . It was not made the official national anthem until 1931. See more

Blood is about 78 percent water. See more

Hydrogen is an explosive gas. Oxygen supports combustion. Yet when these are combined it is water which is used to put out fires. See more

In Tibet it is considered good manners to stick out your tongue at someone. See more

On average, 100 people choke to death on ball-point pens every year, so don't stick it in your mouth! See more

A rat can last longer without water than a camel. See more