Ключевые слова: alternative, background, bright, bulb, business, concept, conservation, creativity, design, development, earth, eco, ecological, efficiency, electricity, energy, environment, environmental, glass, global, glowing, green, growing, growth, idea, illuminated, innovation, inspiration, invention, lamp, leadership, leaf, light, light bulb, lightbulb, nature, object, planet, plant, power, renewable, resource, save, solution, sustainable, symbol, technology, tree, warming, white,