One 75-watt bulb gives more light than three 25-watt bulbs.
57
4.5 pounds of sunlight strike the Earth each day.
27
Sound travels about 4 times faster in water than in air.
408
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Pumice is the only rock that floats on water.
14
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Hot water can freeze faster than cold water.
181