The commercial approach of this world has led to the degradation of the environment. Though we have achieved economic success disposal of waste has become an acute problem in most industrialized nations. Green Chemistry has improved our chemical processes by working to reduce chemical wastes and restricting the use of hazardous chemicals. In this way, chemistry is now being applied to improve the manufacturing sector. Earlier chemistry followed traditional methods and primarily worked to minimize exposure to harmful chemicals. But with the advent of green chemistry, the main emphasis is on the improvement of technical design that utilizes hazard-free chemicals and protects the environment.  So fundamentals and philosophy of green chemistry prevent the causation and spread of pollution and promote sustainability. Green chemistry has routed its development through different periods. Anastas and Warner proposed twelve principles that described green chemistry as a fundamental mechanism that provided means to face environmental challenges through sustainability.

Keywords: Environment, Green Chemistry, Hazard-Free Chemicals, Sustainability,  Twelve Principles.