Environmental law is still a youthful field of law. As it continues to evolve, unevenly around the world, it has come to have varied meanings for different regions and scholars.
There may explore various definitions of environmental law and it is suggested parameters useful for a study of comparative environmental law, international environmental law, the role of natural and physical sciences, and characteristics of environmental law in Asia and the Pacific. Here it is tried to discuss environmental law as a foundation for sustainable development, advocating a broad, scientifically-based definition of environment.