The average temperature at 40,000 feet above sea level is -60 F.
56
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
The average home creates more pollution than does the average car.
33
The force of a suction cup is calculated using F=AP.
15
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51