Ключевые слова: air, atmosphere, background, beautiful, building, catastrophe, chemical, chimney, city, cityscape, climate, cloud, coal, concept, construction, contamination, damage, dirty, disaster, downtown, dust, earth, ecology, emission, energy, environment, environmental, face, factory, fog, foggy, fume, gas, global, gold, industrial, industry, landmark, landscape, man, mist, misty, pipe, planet, pollution, power, scene, sky, skyline, skyscraper, smog, smoke, steam, sun, sunrise, sunset, technology, tower, town, toxic, urban, view, warming,