The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Nylon is made from coal and petroleum.
42
Balsa wood is classified as a hard wood!
41
One barrel of petroleum holds 42 gallons.
20
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12
Sound at the right vibration can bore holes through a solid object.
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