Ключевые слова: air, alternative, architecture, blue, border, built, climate, concrete, construction, dam, dawn, decline, electric, electricity, energy, engineering, environment, environmental, flowing, fuel, generating, generation, generator, horizon, hydraulic, hydro, hydroelectric, hydropower, industry, landscape, lock, mega, nature, near, niagara, plant, power, pumped, river, sky, station, structure, summer, supply, technology, tree, turbine, warming, water, zero,