Ключевые слова: air, atmosphere, byproducts, chemical, climate, clouds, coal, construction, control, daytime, development, ecosystem, emissions, energy, engineering, environment, equipment, facility, factory, geology, grids, health, industrial, industry, infrastructure, landscape, machinery, manufacturing, mountains, natural, nature, operations, outdoor, pollution, power, production, quality, renewable, resources, scenic, smoke, steam, supply, sustainability, technology, terrain, transportation, water, workers,