Green computing or green IT, refers to environmentally sustainable computing or IT. In the article Harnessing Green IT: Principles and Practices,  San Murugesan defines the field of green computing as "the study and  practice of designing, manufacturing, using, and disposing of computers,  servers, and associated subsystems—such as monitors, printers, storage  devices, and networking and communications systems—efficiently and  effectively with minimal or no impact on the environment."[1] The goals of green computing are similar to green chemistry; reduce the use of hazardous materials, maximize energy efficiency during the product's lifetime, and promote the recyclability or biodegradability  of defunct products and factory waste. Research continues into key  areas such as making the use of computers as energy-efficient as  possible, and designing algorithms and systems for efficiency-related  computer technologies.
