Sound travels about 4 times faster in water than in air.
408
By peeing in the shower, you can save 1,157 gallons of water a year.
31
Spain's capital Madrid means "place of abundant water".
29
Lack of water is the #1 trigger of daytime fatigue.
148
A person can live without food for about a month, but only about a week without water.
156
The water of the Antarctica is so cold that nothing can rot there.
334
If you get water flowing fast enough, it can cut metal.
354