Ключевые слова: air, atmosphere, building, carbon, chemicals, chimney, city, climate, coal, construction, contamination, damage, dark, dioxide, dirty, ecology, electricity, energy, environment, exhaust, factory, fog, fuel, fumes, gas, generator, global, industry, infrastructure, manufacturing, pipe, plant, pollution, power, production, refinery, sky, smog, smoke, stack, station, steam, steel, technology, tower, toxic, urban, vapor, warming, waste,