Ключевые слова: air, architecture, blue, building, cancer, carbon, chemical, chimney, clean, climate, cloud, co2, contaminate, contamination, danger, day, dioxide, ecology, emission, environment, environmental, factory, gas, global, greenhouse, industrial, industry, issue, lung, manufacturing, metal, nature, old, outdoor, pipe, plant, pollutants, pollution, production, quality, risk, rusty, sky, smoke, structure, technology, toxic, warming, white,