Ключевые слова: aerial, arrow, blue, building, business, carbon, city, cityscape, clean, co2, concept, dioxide, down, downtown, earth, eco, ecology, environment, environmental, friendly, green, hand, illumination, innovation, light, neon, night, person, phone, power, protect, reduce, renewable, save, shine, shiny, skylines, skyscraper, smart, smartphone, technology,