Project

Preserving the legacy of the Sierra Nevada de Santa Marta, Heart of the World

Rising abruptly from Colombia’s Caribbean coast, the Sierra Nevada de Santa Marta reaches 5,775 meters (18,946 ft.) at its highest points, the peaks of Bolívar and Colón.  It is the highest coastal mountain system in the world, a place where indigenous knowledge and nature’s own wisdom converge.

The sheer changes in elevation create a wide variety of ecosystems within a small area, where the diversity of plant and animal life creates a unique exuberant region. The melting snows of the highest peaks form rivers and lakes, whose freshwater flows down steep slopes to the tropical sea at the base of the mountains. 

The indigenous Arhuaco, Kogi, Wiwa, and Kankuamo people protect and care for this natural treasure with an authority they have inherited from their ancestors.  According to their worldview the land is sacred and shared in divine communion between humans, animals, plants, rivers, mountains, and the spirts of their ancestors. 

Despite this ancestral inheritance, development projects proposed for the region have failed to take the opinions of these indigenous groups into consideration. The Sierra Nevada de Santa Marta is currently threatened by 251 mineral concessions, hydroelectric projects, agriculture, urban sprawl, and infrastructure projects. 

Many of these concessions were granted without the prior consultation of the indigenous communities, which represents a persistent and systematic violation of their rights.

Mining, which implies the contamination and erosion of watersheds, threatens the health of more than 30 rivers that flow out of the Sierra; these are the water sources of the departments of Magdalena, César, and La Guajira.

These threats have brought this natural paradise to the brink of no return. With it, would go the traditional lives of its indigenous inhabitants, who are dependent on the health of their land and the sacred sites it contains.

The Sierra hosts the archaeological site of la Ciudad Perdida, the Lost City, known as Teyuna, the cradle of Tayrona civilization. According to tradition, it is the source from which all nature was born—the living heart of the world. 

The four guardian cultures of the Sierra are uninterested in allowing this natural and cultural legacy to disappear.

 


Complejo Metalúrgico de La Oroya en Perú

Science in the Service of Environmental Justice

By David Cañas and Mayela Sánchez* Science—or rather, the sciences—are the systems of knowledge that different social groups have developed over time to describe the phenomena of nature and society. Thanks to these knowledge systems, humanity has been able to find solutions to countless challenges, and today, more than ever, they must respond to global crises such as climate change, pollution, and biodiversity loss.Understanding ecosystem processes is essential for protecting the environment and providing verifiable, replicable evidence of natural phenomena and the impacts of human activities. It also enables the development of innovative solutions to protect and restore the environment.For science to contribute meaningfully to environmental justice—a concept centered on ensuring that all people enjoy a healthy environment—scientific work must be grounded in the realities of the people and communities affected by environmental degradation, who live in or rely on ecosystems vulnerable to harm. It must also be built on empathy and respect for other forms of knowledge, while seeking to reduce social inequalities.At AIDA, science is a central part of our work, supporting and complementing the strategic litigation we pursue to protect a healthy environment in Latin America. Through science, we can demonstrate the environmental impacts caused by human activities and hold those responsible accountable.  How Do We Do Science at AIDA?  The AIDA scientific team is a multidisciplinary group of professionals specializing in diverse fields, including geography, geology, biology, marine biology, oceanography, anthropology, and economics.Among other tasks, they collect and develop scientific evidence to strengthen the legal arguments in the cases we support across our various lines of work—from protecting the ocean and other critical ecosystems to defending human rights, such as the right to health and access to safe drinking water.The strategic use of science has been central to AIDA’s work since the organization was founded more than 25 years ago. One early example is the case of La Oroya in Peru, where a group of residents sued the government for failing to protect them from decades of heavy metal pollution caused by a metallurgical complex.Then we did something that had not been done before: we connected existing studies with the lived reality of La Oroya. This approach allowed us to demonstrate the relevance of the case and establish a clear link between pollution and its impact on the health of the city’s residents. Our analysis, compiled in the report La Oroya Cannot Wait, served to build the legal case and formulate proposals to the Peruvian government for corrective and preventive measures to address the problem.  In 2024, in a decision that set a historic precedent for state oversight of industrial pollution, the Inter-American Court of Human Rights held the Peruvian state responsible and ordered it to adopt comprehensive reparations measures. Among the scientific team’s more recent contributions is a geospatial analysis of the Salar del Hombre Muerto in the Argentine provinces of Catamarca and Salta. Using maps and satellite imagery, the team documented water loss in this ecosystem caused by lithium mining.Another example is the expert report on solid waste pollution in the tributaries of the Motagua River in Guatemala, in which we recorded and characterized illegal dumps along the banks of the Chinautla River. This work enabled the affected communities to gather the evidence needed for the lawsuit they filed against the municipality of Chinautla for failing to address the contamination of rivers and soil caused by inadequate solid waste management.  The Right to Science When science serves social and environmental justice, its benefits extend to everyone. This purpose was recently upheld by the Inter-American Court of Human Rights in its Advisory Opinion 32, which recognizes the “right to science” as the right of all people to enjoy the benefits of scientific and technological progress, as well as to have opportunities to contribute to scientific activity without discrimination.The Court also recognized indigenous, traditional, and local knowledge as equally valid forms of knowledge. This acknowledges how the deep understanding that indigenous peoples and local communities have of their environment—their worldview based on respect and interdependence, and their spiritual connection to nature—has been fundamental to ecosystem conservation.As an organization that uses science as a tool for environmental protection, we believe in a science that embodies these principles: one built on dialogue between different forms of knowledge, whose benefits reach all people, and which contributes to the socio-ecological transformation the planet urgently needs. *David Cañas is AIDA's Interim Director of Science; Mayela Sánchez is our digital community specialist. 

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A toolkit for using Advisory Opinion 32/25 in climate justice work
Climate Change, Human Rights

A Practical Toolkit for Using Advisory Opinion 32/25 in Climate Justice Work

 READ AND DOWNLOAD THE TOOLKIT The climate crisis is already affecting people and communities across Latin America and the Caribbean—damaging homes, livelihoods, ecosystems, and the fundamental right to a healthy environment.Advisory Opinion 32/25 of the Inter-American Court of Human Rights is the first of its kind to establish that both States and non-State actors—including companies—have clear and binding legal obligations to confront the causes and consequences of the climate emergency as a human rights issue.The historic interpretation, made public on July 3, 2025, gives human rights and environmental defenders a powerful new tool to demand action and justice.But how can this decision be used in real cases, campaigns, and policies today? A Legal Toolkit for Climate JusticeTo help answer that question, more than 20 experts and organizations—including AIDA—created a new publication analyzing the Court's decision with an emphasis on its practical applications.Climate Justice and Human Rights: Legal Standards and Tools from the Inter-American Court’s Advisory Opinion 32/25 contains 14 briefs, organized into four key areas:Foundational Rights and Knowledge;State and Corporate Obligations;Rights of Affected Peoples and Groups;Environmental Democracy and Remedies. Each brief contains:Context and background to situate the issue.A clear legal analysis of the Court’s key contributions.A critical look at how these standards can be applied in practice.Identification of opportunities to advance advocacy and litigation, as well as the gaps that remain. All content was rigorously peer-reviewed to ensure clarity and accuracy. Why Does This Matter Now?With OC-32/25, advocates and local communities across the region now have:Stronger grounds for litigation—incorporating human rights standards into climate-related cases.Legal leverage for corporate accountability—clarifying businesses’ duties to prevent and remedy harm.Arguments to expand protections for those most affected: children, women, Indigenous Peoples, Afro-descendant communities, and environmental defenders.Policy tools to demand national climate actions aligned with human rights. In a region facing disproportionate climate risks, this decision shifts power toward communities and movements seeking justice.What You Can Do With This ToolkitThis publication is a tool to facilitate understanding of the Court's decision and promote concrete legal and political actions to protect communities and ecosystems from the climate emergency.It is addressed to individuals, communities, organizations, and networks working on the climate crisis and human rights issues, providing them with standards and practical recommendations to strengthen their litigation and advocacy strategies and efforts.In short, it's designed to help you incorporate strong legal arguments your work, including:Shaping urgent protection actions for frontline communities.Strengthening advocacy campaigns with legal backing.Informing climate legislation and public policy debates.Supporting community-led demands for adaptation and resilience.Integrating human rights standards into strategic litigation. Whether you are a lawyer, organizer, community leader, or policymaker—this toolkit can help you to turn legal standards into real protection and accountability. A Call to ActionLatin America has contributed least to global emissions but is among the most impacted by climate harms. OC-32/25 opens a new chapter: one where the defense of human rights is also the defense of our climate.Now is the time to use this decision to advance justice across the region.Together, we can transform this legal milestone into tangible protections for the people and places who need them most. READ AND DOWNLOAD THE TOOLKIT 

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Hands weaving a basket
Climate Change, Human Rights

Climate Justice and Human Rights: Legal Standards and Tools from the Inter-American Court’s Advisory Opinion 32/25

On July 3, 2025, the Inter-American Court of Human Rights (IACtHR) delivered its Advisory Opinion OC-32/25 on Climate Emergency and Human Rights (Advisory Opinion), marking a historic legal and political milestone in the global fight for climate justice. It is the first advisory opinion issued by an international court to find that both States and non-State actors, such as business enterprises, have obligations rooted in international human rights law to address the causes and consequences of the climate emergency.The Court articulates clear and binding obligations to act urgently in protecting the global climate system, preventing human rights violations resulting from its alteration, and securing climate reparations. The Advisory Opinion will guide climate litigation in local, regional, and national courts, and provide a foundation for climate policymaking, grounding local legislation and global negotiations not in voluntary commitments, but in legal duties. It will also serve as a testament to the lived experiences and expertise of those on the frontlines of climate harm and at the forefront of climate justice, affirming the peril that climate change represents for human rights and the promise of human rights-based climate action and remedy.This Advisory Opinion is not an isolated development but rather part of an unprecedented global movement for climate justice. It stands alongside the recent climate advisory opinions of the International Tribunal for the Law of the Sea (ITLOS) and the International Court of Justice (ICJ), and may be joined by one from the African Court on Human and Peoples’ Rights (AfCHPR) in the near future. Together, these proceedings mark a decisive moment in consolidating a more comprehensive and human rights-based legal framework to confront the climate emergency— what the IACtHR deems an exceptional threat that endangers life on the planet and severely undermines the enjoyment of human rights. Moreover, these advisory opinions may help cut through the political inertia that has long stalled progress in international climate negotiations and national climate policymaking.   This publication compiles fourteen thematic documents developed through the collaborative efforts of a coalition of environmental, human rights, and academic organizations, alongside experts who have actively participated in the advisory proceedings from the outset. The topics reflect the main thematic areas articulated by the Court in the Advisory Opinion and are organized into four sections: (i) Foundational Rights and Knowledge; (ii) State and Corporate Obligations; (iii) The Rights of Affected Peoples and Groups; and (iv) Environmental Democracy and Remedies.Each brief was prepared by a lead organization and subjected to rigorous peer review to ensure accuracy and consistency. Together, they provide an in-depth analysis of the Advisory Opinion’s key contributions, its legal and practical implications, and the gaps and opportunities this landmark decision presents across the selected thematic areas. They also present arguments, standards, and practical recommendations aimed at strengthening climate litigation and advocacy strategies.This series serves as a resource for legal and advocacy networks, enhancing understanding of the scope of the Court’s decision and encouraging legal and political action to advance the structural changes necessary for communities and ecosystems to achieve climate justice.Read and download the publication 

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