Ключевые слова: air, blue, canal, chimney, climate, co2, color, dirty, discharge, drinking, emissions, energy, environment, environmental, factory, gas, global, greenhouse, health, high, industrial, industry, issues, nature, nuclear, pipe, pipeline, plant, pollution, power, river, sea, sewage, sewer, sky, smoke, steam, tower, tube, unhygienic, vapor, waste, water, white,