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The topic "Green Chemistry" has gained great importance over recent years, being quoted in an increasing number of publications. This fact shows how concern over developing "greener" processes has played a prominent role in the scientific community. In this context, the scope of this work encompasses an analysis of the evolution of the theme since its conception to the present. This analysis elucidates how bibliographic output on "Green Chemistry" is distributed worldwide. Moreover, the main journals on the subject were listed and ranked, according to impact factor.

The fundamental concepts of the green chemistry are highlighted in order to present the enormous number of challenges to develop a new chemistry in research, industry and education. The practice of an environmental friendly chemistry are presented to improve the economics of chemical manufacturing and to enhance the much-tarnished image of chemistry and to present the opportunities to discover and apply this new chemistry. The challenges and opportunities of green chemistry in the world and Brazil are introduced and discussed in this report.