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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Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
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In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
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Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
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Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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German chemists made a replica of a trophy the size of one molecule.
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