The idea of a human rights-based approach to environmental protection first took shape in the context of international environmental law, and soon afterwards spread through most national and regional legal systems, eventually reaching international human rights bodies. More than 50 years after the first mention of the environment as a prerequisite for the realisation of human rights, Resolution 48/13 of the UN Human Rights Council and, a year later, Resolution 76/300 of the UN General Assembly, explicitly recognised for the first time at the international level the human right to a clean, healthy and sustainable environment. Despite being non-legally binding resolutions, their widespread acceptance has great symbolic significance, which some attribute to their ability to change the very nature of international human rights law. While there is no doubt that recognition under the General Assembly demonstrates a strong political commitment to the formulation, content and meaning of the human right to the environment, that is likely to influence the implementation of the human right to the environment at national and regional levels, visible change at the international level will take time, in particular the implementation of the practices called for in Resolution 76/300. This also applies to overcoming the challenges of verticality and territoriality that characterise human rights law, which primarily regulates the relationship between the individual citizen and the State within its territory and which are linked to criticisms of the vagueness of the human right to the environment, or the question of its holders and the holders of the obligations arising therefrom. While its international recognition confirms its widespread application among States, the absence of a uniform definition and implementation mechanisms could make it impossible to implement in practice. The adoption of the human right to the environment in an international treaty or other binding international instrument would seem to be a possible solution for its realisation.
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