Information technology has contributed significantly to economic growth; but its enormous impact on creating a green economy has been ignored. Recently, the term of Green IT has become a topic of constant debate and has been discussed extensively in both academic researches and practitioner reports....

Our earth's crust is the ultimate source of all metallic elements present in the ecosystem. Globally there are 35 metals that concern us because of residential or occupational exposure; 23 of these are the heavy metals....