* Several health systems have adopted environmentally friendly practices like computer recycling programs, energy-efficient lighting, carpooling programs, and building design components that limit water usage. * Vendors are offering more energy-efficient products like virtualization software and switching equipment. * ClOs are reducing power usage and costs by consolidating servers, installing more efficient chilling systems, and implementing policies to power down desktops that aren't in use. * Green IT can be a difficult conceptto sell to CEOs and hospital boards unless it goes hand-in-hand with cost savings.