With their awesome height and dramatic architecture, skyscrapers make cities exciting places to visit and explore. Now there's one more reason to admire these buildings-they're going green! Skyscrapers often use up large amounts of energy in order to keep their lights, heating and cooling systems, and computers operating. Recently, however, builders have found ways to make skyscrapers "green"-that is, more energy efficient and friendly toward the environment. Look inside to find out the creative ways these "greenscrapers" use the latest technology to meet the needs of the people who work and live in them while at the same time conserving and protecting Earth's precious resources. Book jacket.