the right to a healthy environment or the right to a supportable and healthy environment is a human right. it is openly supported by human rights organizations and environmental organizations. the purpose is to protect the ecological systems that provide human health. the right was accepted by the united nations human rights council. it was during its 48th session in october 2021 in hrc/res/48/13. the right is often based on the human rights defense by environmental defenders. examples include land defenders, water protectors and indigenous rights activists.