
Project
Victory: Court ends the “lawful” killing of endangered green sea turtles
In February of 1999, the Constitutional Court in Costa Rica declared an end to the "lawful" killing of endangered green sea turtles. The ruling is an important victory for the green sea turtle and potentially other species left vulnerable by their host countries.
Costa Rica has the privilege and responsibility of being a haven for one of the largest remaining populations of this endangered species of marine turtle in the Atlantic Ocean. Every two or three years, female green sea turtles, many of which are decades old, slowly plod from their ocean homes to nest on a 35 kilometer long beach between the Tortuguero and Parismina River.
Costa Rica, rather than fully protecting these ancient guests, previously had a law allowing for the capture and slaughter of almost two thousand green sea turtles annually. Unfortunately, poachers exploited the law to kill many more than the legal limit, with the survival of the sea turtles jeopardized.
In response to inaction by the Costa Rican government, and to safeguard the survival of the green sea turtle, AIDA worked through its partner organization CEDARENA to file suit and challenge the law.
In the law suit, AIDA and CEDARENA argued that the law violated the Costa Rican constitutional guarantee of an environment that is healthy and “in ecological equilibrium.” We presented hard evidence of the hidden impact of the law on the sea turtles. The Court ruled in our favor, and annulled the law.
The ruling itself does not end the threat to green sea turtles. It may however, provide some breathing room for conservationists to concentrate on stopping illegal poaching. Hopefully, they will succeed.
Related projects

Motagua River: A story of contamination and a call for justice
The Motagua River, Guatemala's largest river, is severely polluted with sewage, solid waste, and other types of waste.It flows into the Caribbean Sea, so contamination reaches those waters, as well as the Mesoamerican Barrier Reef System - the world's largest transboundary reef - and the Honduran coast, causing unquantifiable social and environmental damage.Polluting activities occur throughout the river basin, including sub-basins and micro-basins.In general terms, the contamination has deteriorated the health and violated the right to water, development and a healthy environment of all the people living in the basin.The contamination of the Motagua is a problem that has been going on for decades and requires urgent long-term measures that contribute to the sanitation and integrated management of the river basin.Where is the Motagua River?The Motagua River is one of the main rivers in Guatemala. With a length of 486 km, it crosses 96 municipalities and 14 departments of the country. It originates in Quiché, a department located in the northwest, and flows into the Caribbean Sea.It is at its mouth that its flow meets the Mesoamerican Reef, which extends for approximately 1,000 km and covers the territorial waters of Belize, Guatemala, Honduras and Mexico. Thus, the pollution carried by the river deteriorates the health of the reef system, which is home to the second longest barrier reef in the world.The Mesoamerican Reef protects thousands of kilometers of coastline from currents, waves and storms. In addition to being a breeding and feeding ground for a great diversity of species, it is a carbon dioxide sink and a detoxifier of water and air. The ecological and economic health of the entire South Atlantic area depends on its conservation.In addition, pollution from the Motagua River reaches the coast of Honduras and spreads to Amatique Bay, located along the eastern coast of Guatemala and Belize. This is clearly a transboundary problem.Where does the pollution in of the Motagua River come from?The largest volume of contamination of the Motagua River comes from Guatemala City, the capital of the country, mainly through the waters of the Las Vacas River, which receives a large amount of solid waste from the Chinautla River, as well as sewage that is discharged into its waters on a daily basis.Solid waste from the Chinautla River, which flows through the municipality of the same name, comes from a landfill located in Zone 3 of the capital. Any small landslide in this landfill generates waste that is automatically dumped into the river at any time of the year.The pollution that the Chinautla river carries also consists of a large amount of sewage, generated by at least 500,000 people living in the northern part of Guatemala City, which does not receive any previous cleaning treatment.In the municipality of Chinautla there are numerous illegal landfills. In addition, many private vehicles and collection trucks dump waste on the banks of the Chinautla and Las Vacas rivers.According to data from the Integrated Environmental Management of the Motagua River Basin project, financed by the United Nations Development Program (UNDP), it is estimated that 66% of urban solid waste in Guatemala is not collected and there is no guarantee that the remaining 34% is properly disposed of. In addition, of the total number of landfills in the country, 88.32% are illegal or do not have municipal authorization.Most of the waste is dumped in streams and/or on surfaces that are susceptible to dragging, ending up in one way or another in water sources, such as the Motagua basin.In other words, the main source of contamination of the Motagua River is the poor management of solid waste and water resources in the country; the lack of compliance with existing regulations on wastewater discharge, disposal and treatment of waste and solid waste; as well as the lack of a water law.Who is affected by the contamination of the Motagua River?The contamination of the Motagua River affects the entire population of Guatemala. In the lower basin, it directly affects people dedicated to fishing, who have seen their catches reduced.And, by harming tourism in the Caribbean, it also affects the communities that depend on tourism for their livelihoods.As a basin-wide problem, the contamination of the Motagua affects those living in the main sub-basins and micro-basins of the river, including the indigenous communities of the Mayan Poqomam people in the cities of Chuarrancho and Chinautla.In Chinautla, the contamination affects the living conditions, health, environment, water sources, economy and culture of more than 18,000 people.The restoration of the Motagua River is crucial to improve the quality of life of at least 30% of the Guatemalan population, as well as those affected in neighboring countries.Actions to rescue the Motagua River from contaminationIn the face of the serious degradation of Guatemala's largest river basin, the damage to key ecosystems such as the Mesoamerican Reef, and the human rights violations that pollution generates, urgent measures are required, among them:Verify compliance with environmental and municipal regulations, as well as prevent and halt environmental damage at the source through regulation, monitoring, supervision and oversight of activities that affect the rights of the inhabitants of the Motagua River basin.Strengthen regulations related to wastewater disposal and solid waste management so that they are implemented in a timely manner through complete treatment systems in the municipalities of the basin.Initiate actions to enable the socio-environmental restoration of affected ecosystems throughout the basin, including political, legislative and administrative measures to strengthen the legal system and allocate sufficient financial resources to ensure the protection of waters and territories.
Read more
Families of La Oroya demand Peru comply with Inter-American Court ruling
One year after the decision, the state has still not implemented the ordered reparations. The population lacks comprehensive health care and is once again exposed to toxic contamination due to the reactivation of the La Oroya smelter complex, which is operating without adequate environmental management.One year after the Inter-American Court of Human Rights ordered the Peruvian state to provide comprehensive reparations to the residents of La Oroya, after finding it responsible for violating their rights, the victims are still waiting for the ruling to be implemented and for state to comply with its international obligations."It's already been a year since the ruling was announced, how much longer will we have to wait?" asked Yolanda Zurita, a resident of La Oroya and a petitioner in the case. "Enough is enough! We demand that the Peruvian state immediately comply with the ruling of the Inter-American Court, which will benefit not only the victims of the case, but also the population of La Oroya and the country exposed to toxic substances from the indiscriminate development of extractive and industrial activities in our territories."On March 22, 2024, in a landmark decision for the protection of a healthy environment in Latin America, the Court responded to the long and tireless search for justice by the families of La Oroya, who have been affected for decades by the extreme levels of contamination from the La Oroya Metallurgical Complex (CMLO) and the lack of adequate protective measures by the State, which today ignores the ruling and underestimates its importance.Although the Court ordered the State to ensure that CMLO's operations comply with international environmental standards and to prevent and mitigate damage to the environment and human health, the opposite is currently the case: the complex has reactivated its operations without having modernized its facilities to prevent and mitigate the environmental and health risks it generates for the population.It is urgent that the CMLO stops polluting and that the Peruvian State adopts the measures required by the Court to modernize it in accordance with international environmental standards of environmental protection, in compliance with the ruling."With the reactivation of the metallurgical complex, the people of La Oroya are once again being exposed to levels of pollution that endanger their lives; the Inter-American Court's ruling is clear and the State is obligated to comply," said Rosa Peña, senior attorney with the Inter-American Association for Environmental Defense (AIDA). "The delay in complying with the ruling is re-victimizing the families who have been demanding justice for more than 20 years."The court also ordered the state to provide free medical care to the victims and to guarantee specialized care to residents with symptoms and illnesses related to contamination from the mining and metallurgical activities. Today, however, comprehensive health care is not guaranteed in La Oroya. It is necessary that the State, through and in coordination with the Ministry of Health, the Regional Health Directorate of Junín, the General Directorate of Environmental Health, and health care providers, create and implement the protocol for comprehensive care for victims in La Oroya, as established by the Court.The ruling set a historic precedent for the control of industrial pollution by states. For the Peruvian State to make real progress in its implementation, it is imperative that the Attorney General's Office issue the Compliance Resolution."Despite the deadlines set by the Inter-American Court for the Peruvian State, there has been virtually no progress in the implementation of the ruling," said Christian Huaylinos, coordinator of the legal department of the Pro Human Rights Association (APRODEH). "Above all, the nature of the case must be taken into account, which implies that La Oroya has been classified as a sacrifice zone due to the high levels of contamination; therefore, the need to fully compensate the victims is urgent." Background of the caseLa Oroya is located in the central mountain range of Peru, in the department of Junin, 176 km from Lima. In 1992, the US company Cerro de Pasco Corporation installed the La Oroya Metallurgical Complex (CMLO) to process mineral concentrates. The complex was nationalized in 1974 and operated by the state under the name Centromin Peru until 1997, when it was taken over by Doe Run Peru, which operated it until 2009. In short, the CMLO is over 100 years old.In La Oroya, most of the people affected by the CMLO contamination, including children, have lead levels higher than those recommended by the World Health Organization. In some cases, they have registered higher levels of arsenic and cadmium, in addition to stress, anxiety, skin problems, stomach problems, chronic headaches, and respiratory or cardiac problems, among others.In the absence of effective responses at the national level and on behalf of the victims, an international coalition of organizations filed a complaint against the Peruvian State with the Inter-American Commission on Human Rights in 2006. In October 2021, the Commission found the Peruvian government responsible and referred the case to the Inter-American Court. In October 2022, more than 16 years after the international complaint was filed, the victims, represented by AIDA and APRODEH with the assistance of Earthjustice, brought the case before the Court. Press contactsVíctor Quintanilla (Mexico), AIDA, [email protected], +52 5570522107María Nieve Sullón (Peru), APRODEH, [email protected], +51 984926868
Read more
Why is lithium mining in Andean salt flats also called water mining?
By Víctor Quintanilla, David Cañas and Javier Oviedo* According to official figures, approximately 2.2 billion people worldwide lack access to drinking water.Despite this panorama, threats to this common good from overexploitation and pollution are increasing. One such threat is the accelerated extraction of lithium in Latin American countries, driven by corporate and state actors to meet the energy transition needs of the global North.Lithium extraction involves enormous water consumption and loss and is essentially water mining.On the continent, the advance of the lithium industry particularly threatens the salt flats and other Andean wetlands of the Gran Atacama region—located in the ecological region of the Puna, on the border of Argentina, Bolivia and Chile—where more than 53 percent of the mineral’s resources (potentially exploitable material) are located.Lithium mining exacerbates the natural water deficit in the area, threatening not only the salt flats, but also the many forms of life that live there. Where does the water used in lithium mining come from?First, it’s necessary to point out that salt flats are aquatic ecosystems located at the bottom of endorheic or closed basins. There, rivers do not flow into the sea but into the interior of the territory, so the water forms lakes or lagoons often accompanied by salt flats due to evaporation.In the salt flats, freshwater and saltwater usually coexist in a delicate balance that allows life to survive.The regions with salt flats, such as the Gran Atacama, are arid or semi-arid, with high evaporation and low rainfall. There we find freshwater aquifers at the foot of the mountains and brine aquifers in the center of the salt flats, both connected and in equilibrium.Brine is basically water with a high salt content, although the lithium mining industry considers it a mineral to justify its exploitation and minimize the water footprint of its activities.In addition to being essential for life, the waters of the salt flats are a heritage resource because they are very old—up to tens of thousands of years—and have been the livelihood of the indigenous people who have inhabited the Puna for thousands of years.When the mining industry moves into a salt flat, it threatens the natural balance and directly affects the relationship between water and the social environment, as well as the relationship between water and other forms of life.To extract lithium from a salt flat, the traditional procedure is to drill the salt flat, pour the brine into large ponds, wait for the water to evaporate so that the lithium concentration increases, send the lithium concentrate to an industrial plant and subject it to chemical treatment to separate the lithium from other salts and finally obtain lithium carbonate or hydroxide: a raw material used mainly in the manufacture of batteries.The continuous and large-scale extraction of brine from saline aquifers alters the natural balance of groundwater. As a result, areas that were previously filled with brine are emptied, causing freshwater from nearby aquifers to move in and occupy those spaces, becoming salinized in the process.The final processes to extract lithium carbonate and separate it from the rest of the compound also require water, which is drawn from surface or underground sources that also supply local communities.Therefore, the water used in lithium mining comes from:Underground freshwater and brine aquifers.Surface sources such as rivers and vegas (land where water accumulates). Therefore, the inherent risk of lithium mining is the overexploitation of these water sources. How much water does lithium mining use?The extraction of lithium by the methods described above involves an enormous consumption and loss of water, which is not returned to the environment because it completely used up, because its properties change, or because it is simply lost through evaporation.According to scientific data, the average water overconsumption in lithium mining is as follows:150 m3 of fresh water used to produce one ton of lithium.350 m3 of brine per ton of lithium.Between 100 and 1000 m3 of water evaporated per ton of lithium produced. To illustrate the loss of water resources in lithium mining, the water lost to evaporation is equivalent to the total water consumption of the population of Antofagasta (166,000 people) for two years. This Chilean city is located 200 km from the Salar de Atacama, where more than 90 percent of the country's lithium reserves are located.In addition to water depletion, lithium mining can also contaminate the resource by producing wastewater containing toxic substances. Our vital relationship with waterUnlike the mining industry, which sees water as just another resource to be exploited, the indigenous communities living in the area have an ancestral connection to the resource on which their economic and productive activities depend, as well as their customs, traditions and worldview.These communities must now confront the pressures on water from the advance of lithium mining, driven by outside interests.But they are doing so with courage, developing processes of defense of water and territory.Let us learn from them to defend a common good without which no way of life is possible.Learn more about the impacts of lithium mining on Andean salt flats in this StoryMap (in Spanish)Watch the recording of the webinar “Evidence of hyperconsumption of water in lithium extraction and production” (in Spanish) *Víctor Quintanilla is AIDA's Content Coordinator; David Cañas and Javier Oviedo are scientific advisors.
Read more