The Aarhus Convention is a groundbreaking international treaty that links environmental rights with human rights. Adopted on June 25, 1998, in the Danish city of Aarhus, it establishes that sustainable development can only be achieved through the active involvement of all citizens.

The convention gives the public rights regarding the environment and imposes obligations on governmental authorities to protect those rights. It is built upon three structural pillars:

  • Access to Environmental Information: Public authorities are legally required to provide accurate environmental data to any citizen who requests it. This includes information on the state of the air, water, soil, and human health conditions affected by local ecosystems. Governments must actively publish this data without requiring a justification from the citizen.

  • Public Participation in Decision-Making: Citizens and environmental NGOs must be allowed to participate in the planning and development of projects, policies, or laws that impact the environment. Public authorities must take these opinions into account before greenlighting major industrial projects, urban expansions, or waste management facilities.

  • Access to Justice: This pillar gives the public the right to challenge government decisions in court if they believe their rights under the first two pillars have been violated. It provides a legal mechanism for citizens and NGOs to sue companies or public bodies that break environmental laws.

A historic milestone was reached when a dedicated Special Rapporteur on Environmental Defenders was established to protect environmental activists from persecution, harassment, and violence. In recent years, this mechanism has been heavily utilized across signatory states to legally protect local communities protesting destructive infrastructure projects or reporting industrial pollution, ensuring that governments cannot silence climate dissent.