Ключевые слова: air, blue, carbon dioxide, chimney, climate change, co2, construction, contaminate, dioxide, ecological, ecologist, ecology, emission, emissions, energy, environment, environmental, environmental policy, environmental protection, environmentalism, factory, fossil fuel, fuel, fumes, fuming, gas, global, global warming, harmful, industrial, industrial pipe, industry, manufacturing, pipe, plant, pollution, power, power plant, sky, smog, smoke, smokestack, stack, station, steam, toxic, vapor, warming, white,