The Earth's atmosphere weighs about 5.5 quadrillion tons.
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Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
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The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
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Brass doorknobs automatically disinfect themselves in about 8 hours.
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A cubic yard of air weighs about 2 pounds at sea level.
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Sound at the right vibration can bore holes through a solid object.
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If the chemical sodium is dropped into water it will immediately and violently explode.
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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.
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