ICT is playing an increasingly important role in both business and private life. It has increased international interconnectedness and sped up the process of globalization, but on the other hand, the total energy consumption by the communication and networking devices and the relevant global CO emission is increasing exponentially. ICT has, in many ways, a vital role to play. It accounts for about two percent of global CO emissions. Telecommunications applications can have a direct, tangible impact on lowering greenhouse gas emissions, power consumption, and achieve efficient recycling of...