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
Your brain is 80% water.
525
Iron weighs more after it rusts.
16
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
A ball of glass will bounce higher than a ball made of rubber.
73
Each day, up to 150 species of life become extinct.
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