Ключевые слова: air, atmosphere, building, burning, carbon, chemical, chimney, city, cityscape, coal, color, day, dioxide, dirty, disaster, ecology, emission, energy, environment, environmental, exhaust, factory, fire, fog, fuel, gas, global, horizon, houses, industrial, industry, landscape, pipe, plant, polluted, pollution, power, sky, skyline, smog, smoke, steam, sunset, technology, toxic, urban, vapor, warming, weather,