A portion of the water you drink has already been drunk by someone else, maybe several times over.
170
Sound travels about 4 times faster in water than in air.
408
A person can live without food for about a month, but only about a week without water.
156
The Kangaroo Rat can last longer without water than a camel.
233
Pure water (H2O) does not conduct electricity on its own.
46
If you get water flowing fast enough, it can cut metal.
354
Penguins have a gland above their eye that turns saltwater into freshwater.
12