Ключевые слова: background, bright, bulb, concept, creative, creativity, earth, eco, ecology, electric, electricity, energy, environment, environmental, friendly, future, glass, global, glow, grass, green, health, icon, idea, innovation, inspiration, intelligent, invention, lamp, leaf, light, lightbulb, natural, nature, person, planet, plant, power, renewable, save, sign, smart, solar, success, sustainable, symbol, technology, think, tree, vision,