The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
One barrel of petroleum holds 42 gallons.
20
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
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The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
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The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51