Ключевые слова: air, architecture, atmosphere, background, beautiful, building, chimney, city, climate, clouds, dioxide, dirty, ecology, emission, energy, environment, environmental, factory, fuel, gas, global, heaven, horizon, industrial, industry, landscape, nature, oil, petrochemical, pipe, plant, pollution, power, production, refinery, scotland, silhouette, sky, smog, smoke, smokestack, steam, sunset, technology, tower, toxic, twilight, urban, warming, weather,