Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
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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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Brass doorknobs automatically disinfect themselves in about 8 hours.
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The bark of an older redwood tree is fireproof.
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There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5