In this issue we provide a rundown of the myriad ways to green your data center. Dave Dewis, of ICRTec Corp., takes a grid-wise approach to sustainability and Kim Griger, of 3M, discusses five ways to achieve efficiency because there is more than one way to go green. And we have two articles on airflow containment, which is always a hot topic. Raissa Carey of Chatsworth Products discusses the increasing regulation of airflow containment while Lars Strong of Upsite Technologies discusses modular containment in existing data centers as a way to improve IT equipment intake air temperatures and the reliability of equipment.