Green chemistry (or sustainable chemistry) is a type of chemical research and engineering. It supports the design of products and processes that use as little dangerous substances as they can.[1]
Environmental chemistry is the chemistry of the natural environment and of pollutant chemicals in nature. But green chemistry wants to reduce and prevent pollution at its source. In 1990, the Pollution Prevention Act was passed in the United States. This law sought original and new ways to handle pollution. It aims to avoid problems before they happen.
Green chemistry applies organic chemistry, inorganic chemistry, biochemistry, analytical chemistry and even physical chemistry. While green chemistry seems to focus on just industrial applications, it does apply to any chemistry choice. Green chemists reduce the hazards and increase the efficiency of any chemical choice. It is distinct from environmental chemistry which focuses on chemical phenomena in the environment.