The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
One barrel of petroleum holds 42 gallons.
20
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65