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46   Obama takes to Twitter to answer questi... 산하온 2015-06-01 987
45   China pledges to tackle pollution crisi... 산하온 2013-03-06 988
44   Japan, China, S. Korea to cooperate on ... 산하온 2013-05-14 989
43   Air pollution needs urgent action (Chin... 산하온 2013-03-03 997
42   Secretary-general admits growing UN pes... 산하온 2010-08-21 1004
41   Extreme weather may be signs of climate... 산하온 2010-08-21 1016
40   Global warming expands Antarctic sea ic... 산하온 2013-04-04 1016
39   Obama's warning on climate deal (BBC) 산하온 2009-12-19 1017
38   Air pollution in Beijing reaches danger... 산하온 2013-01-13 1021
37   Senate panel approves climate change bi... 산하온 2009-11-17 1030
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