Sound travels about 4 times faster in water than in air.
408
A portion of the water you drink has already been drunk by someone else, maybe several times over.
170
Pumice is the only rock that floats on water.
14
A person can live without food for about a month, but only about a week without water.
156
Water is actually naturally blue.
48
Hot water can freeze faster than cold water.
181
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Penguins have a gland above their eye that turns saltwater into freshwater.
12