1. Introduction John H. Knox and Ramin Pejan; 2. Catalyst for change: evaluating forty years of experience in implementing the right to a healthy environment David R. Boyd; 3. Learning from constitutional environment rights Erin Daly and James R. May; 4. The right to a satisfactory, healthy and sustainable environment in the African regional human rights system Lilian Chenwi; 5. The European Court of Human Rights and international environmental law Ole W. Pedersen; 6. Complexities and uncertainties in matters of human rights and the environment: identifying the judicial role Dinah Shelton; 7. Reasoning up: environmental rights as customary international law Rebecca M. Bratspies; 8. In search of a right to a healthy environment in international law: jus cogens norms Louis J. Kotzé; 9. A human right to a healthy environment? Moral, legal and empirical considerations César Rodríguez-Garavito; 10. Quality control of the right to a healthy environment Marcos Orellana; 11. The Malé formulation of the overarching environmental human right Daniel Magraw and Kristina Wienhöfer; 12. The politics of human rights, the environment, and climate change at the human rights council: towards a universal right to a healthy environment? Marc Limon; 13. Human rights in the climate change regime: from Rio to Paris and beyond Lavanya Rajamani; 14. The right to a healthy environment and climate change: mismatch or harmony? Sumudu Atapattu.