Ключевые слова: air quality, blue, burn, carbon, chemical, chimney, climate change, combustion, conservation, consumption, danger, ecological, emission, emissions, energy, environment, environmental, extraction, fire, flame, fossil fuels, fuel, gases, global warming, greenhouse, hazard, heat, heavy, high, impact, industrial, industry, infrastructure, machinery, natural gas, oil, plant, pollution, power, process, production, refinery, resource, safety, sky, smoke, sustainability, technology, temperature, utility,