Ключевые слова: air, background, boiler, building, chimney, city, cloud, coal, cold, ecology, electric, electricity, emission, energy, environment, factory, generation, generator, heat, heating season, industrial, industry, infrastructure, landscape, nuclear, pipe, plant, pollution, power, production, russia, sky, smog, smoke, station, steam, technology, thermal, thermoelectric, tower, urban, warming, winter,