Ключевые слова: air, black, blue, building, chemical, chimney, climate, coal, danger, dangerous, dioxide, dirty, ecology, emission, emissions, energy, environment, environmental, factory, factory pollution, fuel, gas, global, industrial, industry, industry plant, intoxicated, intoxication, oil, pipe, plant, pollution, power, refinery, sky, smog, smoke, smoke cloud, smokestack, smoking, stack, station, steam, structure, technology, tower, toxic, warming, warning,