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6   Air pollution up in Europe as water dis... 산하온 2007-04-16 1529
5   Air pollution needs urgent action (Chin... 산하온 2013-03-03 997
4   Air pollution in Beijing reaches danger... 산하온 2013-01-13 1021
3   After Oil Spill, China's Polluted River... 산하온 2010-01-06 1121
2   670,000 smog-related deaths a yea(South... 산하온 2014-11-06 1112
1   4,500-year-old ice shelf breaks away(AP... 산하온 2008-09-04 1694
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