What is Sustainability?
"Sustainability is a characteristic of a process or state that can be maintained at a certain level indefinitely. For planet earth, it is thus the intent to provide the best outcomes for the human and natural environments both now and into the indefinite future. " [From Wikipedia: http://en.wikipedia.org/wiki/Sustainability ]
Sustainability encompasses numerous green theories ranging from Hazardous Materials Management to Purchasing to Laboratory Practices to Waste Minimization.