Sound travels about 4 times faster in water than in air.
408
Water is actually naturally blue.
48
A portion of the water you drink has already been drunk by someone else, maybe several times over.
170
Spain's capital Madrid means "place of abundant water".
29
Tap water in Canada is held to a higher health standard than bottled water.
19
Penguins have a gland above their eye that turns saltwater into freshwater.
12
Water, electricity, and gas has been free in Turkmenistan since 1991.
11