Ключевые слова: alternative, bulb, business, concept, conservation, creative, creativity, development, earth, eco, ecologic, ecological, ecology, efficiency, electric, electricity, energy, environment, environmental, future, global, green, grow, growing, growth, idea, innovation, investment, lamp, leaf, light, light bulb, natural, nature, plant, power, protect, protection, renewable, renewable energy, resource, responsibility, save, science, sustainability, sustainable, technology, tree, warming,