This document discusses litigation on environmental rights in India. It analyzes how environmental rights have extended the scope of Article 21's right to life to include the right to a clean environment. The document outlines key principles of sustainable development from the Brundtland Report, including intergenerational equity, the precautionary principle, and the polluter pays principle. It also summarizes several important Supreme Court cases that have shaped jurisprudence around sustainable development and environmental rights in India. Finally, it notes how legislation and cases before the National Green Tribunal have also furthered the concepts of sustainable development.