Sound travels about 4 times faster in water than in air.
408
Billions of neutrinos pass unnoticed through your body every second.
6
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Pumice is the only rock that floats on water.
14
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Hot water can freeze faster than cold water.
181
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155