Technology has transformed the office, made it possible to communicate instantly around the globe and put the world's art, music and books at our fingertips. Can it now help improve the environment? Technologists say yes, as they use computing power to save energy, reduce waste and produce power more efficiently. Try our quiz to see how well you know green IT. 1) Which of these roles for information and communications technology has the potential to yield the biggest reductions in greenhouse-gas emissions by 2030? The Journal Report See the complete Technology report. A. Retrofitting existing buildings B. Designing new buildings for reduced emissions C. Telecommuting and virtual meetings D. E-commerce and replacing paper