Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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The sun is 330,330 times larger than the earth.
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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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Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
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Scientists in Germany have developed a candy that doesn't cause cavities.
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