Ключевые слова: air, atmosphere, boiler, carbon, chemical, chemistry, chimney, dioxide, ecology, economy, effect, energy, environmental, exhaust, expenses, factory, footprint, fuel, gas, gasoline, generation, global, heat, heaven, horizontal, housing, industrial, infrastructure, manufacturing, pipe, pollution, power, problem, production, refinery, residential, science, silhouette, smog, smoke, smokestack, stack, steam, swirl, technology, tower, toxic, tube, warming, white,