Environment, Air, Pollution, City skyline with heavy smog in Santiago, Chile.
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Environment, Pollution, Factory omitting plumes of smoke from chimneys in Santiago, Chile.
20071951
Greece, Central, Athens, Cityscape and smog.
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Norway, Svalbard, Longyearbyen glacier, Hikers walking up the lower section of the glacier, Moraine field in the foreground, Early Winter snow on valley sides.