The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
The smell of freshly cut grass is actually a plant distress call.
31
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Iron weighs more after it rusts.
16
Hot water can freeze faster than cold water.
181
4.5 pounds of sunlight strike the Earth each day.
27
Nylon is made from coal and petroleum.
42