Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
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Passengers on the Beijing subway can pay with plastic bottles.
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For Valentine's Day 2014, an unnamed man sabotaged a special screening of "Beijing Love Story" at a Shanghai cinema by booking every other seat, subsequently preventing couples from sitting together.
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In 2002, there were no billionaires in China. In 2007, there were 106 billionaires.
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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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