(1.) Part IV-A of the Constitution of India containing fundamental duties as set out in Article 51A was incorporated in the Constitution by the 42nd Amendment Act with effect from 3/1/1977. Clause (g) of Article 51A provides that it shall be the duty of every citizen of India to protect and improve the natural environment including forests, lakes, rivers and wildlife, and to have compassion for living creatures. This Court in several decisions has held that the right to live in a pollution free atmosphere is a part of the fundamental right guaranteed under Article 21 of the Constitution of India.
(2.) The world changed rapidly after World War II. From the late 1960s and early 1970s, slowly there was a realisation about the drastic consequences of the destruction of environment and pollution of various kinds. In June 1972, at Stockholm, the United Nations Conference on Human Environment was held. In the said conference, several decisions were taken by the world community to protect the environment.
(3.) In our country, it took fourteen years thereafter for the legislature to come out with a law for protection and improvement of the environment. The Environment (Protection) Act, 1986 (for short, 'the 1986 Act') was brought into force with effect from 19/11/1986. As can be noticed from several orders of this Court and the High Courts, the progress of implementation of the 1986 Act has been very slow.