Ключевые слова: alternative, bulb, concept, creative, eco, ecofriendly, ecologic, ecology, electric, electricity, energy, environment, future, generate, generation, green, harvest, idea, illuminate, innovation, lamp, light bulb, natural, photosynthesis, planet, pollute, pollution, power, process, protect, renewable, resource, sky, solar, solution, sources, sunlight, sustainable, symbol, technological, turbine, white, wind,