The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Hot water can freeze faster than cold water.
181
Sound travels fifteen times faster through steel than through air.
134
One barrel of petroleum holds 42 gallons.
20
The average home creates more pollution than does the average car.
33
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61