In a groundbreaking advisory opinion issued today, the Inter-American Court of Human Rights clarifies the obligations of States to effectively protect people and communities from the harmful impacts of the climate crisis. The decision sets a powerful precedent for climate justice and offers critical guidance to national and international courts worldwide.

San José, Costa Rica. In its Advisory Opinion No. 32, the Inter-American Court of Human Rights has taken a historic step toward strengthening global climate accountability. The Court sets a powerful precedent by establishing legal standards that States across the continent must meet to protect human rights in the face of the climate crisis. This landmark ruling is expected to drive a new wave of strategic climate litigation, enabling affected people and communities to access justice.

“The Court’s decision marks a watershed moment for climate justice in Latin America and around the world, as it is the first time a regional human rights tribunal has clearly spelled out States’ legal obligations in response to the climate crisis,” said Gladys Martínez, Executive Director of the Interamerican Association for Environmental Defense (AIDA). “We welcome this significant step forward — one that will not only help protect communities and individuals, but also guide national and international courts, including the International Court of Justice, which is now developing its own opinion on this critical issue.”

The Court recognized, for the first time, the existence of an autonomous human right to a healthy climate, derived from the right to a healthy environment. In light of Advisory Opinion No. 32, States across the region now have legal obligations to address the climate crisis as a human rights issue, in accordance with their domestic laws and applicable treaties and agreements, including:

• Guaranteeing a climate system free from dangerous anthropogenic interference, as a precondition for the exercise of other human rights.
• Respecting the principle of intergenerational equity, by ensuring that current generations leave behind conditions of environmental stability that allow future generations similar opportunities for development.
• Regulating, supervising, and overseeing, as well as requiring and approving environmental impact assessments, to fulfill their duty to mitigate greenhouse gas (GHG) emissions.
• Defining a mitigation goal; developing and maintaining an up-to-date mitigation strategy grounded in human rights; and strictly monitoring and supervising public and private GHG-emitting activities.
• Ensuring an equitable distribution of the burdens of climate action and climate impacts, avoiding the imposition of disproportionate burdens—this includes the fair allocation of the costs associated with the energy transition.

In addition, the Court recognized in its opinion that local, traditional, and Indigenous knowledge is protected under Inter-American treaties and constitutes an integral part of the concept of the best available science—opening a new path for the enforceability and inclusion of these knowledge systems in responses to the climate emergency.

“This decision by the Inter-American Court ushers in a new era for climate negotiations and litigation by providing individuals, communities, and civil society organizations with a clearer and more robust legal framework,” said Liliana Ávila, Director of the Human Rights and Environment Program at AIDA. “It empowers people to hold States accountable – both in climate negotiations and courtrooms – and to push for the structural changes needed to confront the climate crisis. This includes meeting their obligations on mitigation, adaptation, and addressing loss and damage, all while upholding fundamental human rights.”

The Court’s decision responds to a request submitted in January 2023 by the governments of Colombia and Chile. In their petition, the two States emphasized that their populations — along with those of other countries across the Americas — are already experiencing severe impacts from the global climate crisis, including droughts, floods, wildfires, and other extreme events. They called on the Court to clarify how the American Convention on Human Rights should be interpreted in the context of the climate emergency, its root causes, and its wide-ranging consequences.

“This decision serves as a binding interpretive tool for States in the region, opening new legal pathways to hold governments accountable for protecting human rights,” said Marcella Ribeiro, Senior Attorney at AIDA. “States must now align their domestic policies to meet the legal standards set by the Court — including, among other things, properly regulating corporate activity in the context of the climate crisis and ensuring a stable climate for future generations.”

From the outset of the process, AIDA played a proactive role. The organization supported various communities across the region in ensuring their voices were heard by the Inter-American Court, submitting legal briefs that highlighted the socio-environmental impacts of the climate emergency on Indigenous peoples, women, children, people of diverse sexual orientations and gender identities, and on particularly fragile ecosystems such as coral reefs. AIDA also facilitated the participation of community representatives in the public hearings held as part of the process, which took place in Barbados and Brazil in April and May 2024, respectively.

AIDA additionally submitted its own legal brief to the Court, arguing that the right to a “stable and safe climate” should be recognized as part of the universal right to a healthy environment – underscoring States’ obligations to prevent and mitigate the harmful effects of the climate emergency on their populations.

The process saw the submission of more than 200 written observations — an unprecedented number for an Advisory Opinion of the Inter-American Court — reflecting the region’s strong engagement with the issue. Advisory Opinions play a vital role in shaping human rights law by clarifying how existing rights should be interpreted, thereby guiding States in how to uphold and enforce them within their territories or jurisdictions.

Advisory Opinion No. 32 builds upon and reinforces earlier rulings, including the 2024 advisory opinion from the International Tribunal for the Law of the Sea, which clarified States’ obligations to protect the marine environment from the climate crisis. It also complements the forthcoming opinion from the International Court of Justice – the UN’s highest judicial body – which will define States’ responsibilities in the face of the global climate emergency.

In a global context that demands ever-stronger climate action, the Inter-American Court’s decision reaffirms that governments must act based on binding legal obligations — not merely voluntary commitments. This legal milestone provides people and communities across the region a powerful foundation from which to demand real action and the full protection of their rights in a safe, just, and sustainable climate.
 

Press contact:

Víctor Quintanilla, [email protected], +52 5570522107