I. JURISPRUDENTIAL BACKGROUND AND THEORETICAL ISSUES
To date, traditional international law does not consider human environmental rights to a clean and healthy environment to be a jus cogens human right. Jus cogens (“compelling law”) refers to preemptory legal principles and norms that are binding on all international States, regardless of their consent. They are non-derogable in the sense that States cannot make a reservation to a treaty or make domestic or international laws that are in conflict with any international agreement that they have ratified and thus to which they are a party. They “prevail over and invalidate international agreements and other rules of international law in conflict with them… [and are] subject to modification only by a subsequent norm… having the same character.” (1) Thus, they are the axiomatic and universally accepted legal norms that bind all nations under jus gentium (law of nations). For example, some U.N. Charter provisions and conventions against slavery or torture are considered jus cogens rules of international law that are nonderogable by parties to any international convention.
While the international legal system has evolved to embrace and even codify basic, non-derogable human rights (2), the evolution of environmental legal regimes have not advanced as far. While the former have found a place at the highest level of universally recognized legal rights, the latter have only recently and over much opposition, reached a modest level of recognition as a legally regulated activity within the economics and politics of sustainable development.