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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Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
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Because heat expands the metal, the Eiffel Tower always leans away from the sun.
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A cubic yard of air weighs about 2 pounds at sea level.
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Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
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Pure water (H2O) does not conduct electricity on its own.
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4.5 pounds of sunlight strike the Earth each day.
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