Lack of water is the #1 trigger of daytime fatigue.
148
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
Pumice is the only rock that floats on water.
14
Penguins have a gland above their eye that turns saltwater into freshwater.
12
Sound travels about 4 times faster in water than in air.
408
Hot water can freeze faster than cold water.
181