Ключевые слова: air, alternative, building, business, carbon, chimney, city, coal, construction, copy, dioxide, electricity, energy, environment, environmental, factory, fossil, fuel, fumes, gas, generation, generator, geothermal, global, heat, heavy, iceland, industry, metal, nature, no, people, pipe, plant, pollution, power, sky, smog, smoke, stack, station, steam, supply, technology, tower, tube, turbine, valve, warming, winter,