Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Diamonds can be shattered with a hammer.
-104
One barrel of petroleum holds 42 gallons.
20
A cesium atom in an atomic clock beats over nine billion times a second.
43
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
One ragweed plant can release as many as one billion grains of pollen!
51
4.5 pounds of sunlight strike the Earth each day.
27