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African Court on Human and People’s Rights Climate Advisory Opinion

Summary:
On 2 May 2025, a request for an advisory opinion on climate change was submitted to the African Court on Human and People’s Rights. The request was submitted by the Pan African Lawyers Union (PALU), in collaboration with the African Climate Platform, and other African Civil society Organizations including the Environmental Lawyers Collective for Africa, Natural Justice and resilient40, and seeks clarification of States’ obligations in the context of climate change.

Submitted under article 4 of the Protocol to the African Charter on Human and People’s Rights on the establishment of an African Court on Human and People’s Rights and Rule 82(1) of the Rules of the African Court on Human and Peoples Rights, the request submits that “[a]cross the continent, Africans are suffering the consequences of climate change, whether from rising temperatures, unrelenting droughts, catastrophic floods, vanishing biodiversity, or threats to livelihoods. Climate change in Africa has had prior, current and will have future consequences that impact the enjoyment of numerous rights.”

The request sets out impacts, disaggregating them region-by-region and in terms of the groups of people most affected by climate change (mentioning women and girls, children, the elderly, Indigenous peoples, and environmental human rights defenders in particular).

The request then goes on to discuss several issues of law, beginning with issues of admissibility and jurisdiction and then relying on a wide range of rights and instruments, namely:

  • a) the Constitutive Act of the African Union
  • b) the African Charter for Human and Peoples Rights (‘Banjul Charter’), especially articles 2, 3, 4, 5, 8, 9, 10, 11, 12, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24, 60 and 61
  • c) African Union Convention for the Protection and Assistance of Internally Displaced Persons in Africa (Kampala Convention)
  • d) Protocol to the African Charter on Human and Peoples’ Rights on the Rights of Women in Africa (Maputo Protocol)
  • e) The African Charter on the Rights and Welfare of the Child
  • f) The Revised African Convention on Conservation of Nature
  • g) Any other Relevant Instrument.

In doing so, PALU invites the Court to consider international climate change law, including the UNFCCC, the Kyoto Protocol and the Paris Agreement as well as the UN Conventions on Combatting Desertification and on Biological Diversity.

Rights invoked in more detail:
PALU submits that “a rights-based climate approach is needed to address the challenges posed by climate change” and that the human rights framework “provides a robust legal framework upon which the Court may rely to define States’ responsibilities and duties in the context of climate change […] because the Charter clearly provides for collective rights and the explicit protection of the right to a healthy environment.” PALU accordingly invites the Court to consider the following provisions of the Banjul Charter:

  • Articles 2 and 3 (equality and non-discrimination)
  • Article 4 (right to life and inviolability of the human person)
  • Article 5 (right to respect for dignity and prohibition of all forms of exploitation and degradation, including slavery and torture)
  • Article 8 (freedom of conscience and religion)
  • Article 9 (freedom of information and opinion)
  • Article 10 (freedom of association)
  • Article 11 (freedom of assembly)
  • Article 12 (freedom of movement, residence and asylum; prohibition of mass expulsion)
  • Article 14 (right to property)
  • Article 16 (right to health)
  • Article 17 (right to education)
  • Article 18 (protection of the family, prohibition of age and gender discrimination)
  • Article 19 (equality of peoples, prohibition of domination)
  • Article 20 (right of peoples to existence and self-determination)
  • Article 21 (right of peoples to freely dispose of their wealth and natural resources)
  • Article 22 (right of peoples to their economic, social and cultural development)
  • Article 23 (right of peoples to national and international peace and security)
  • Article 24 (right of all peoples to a general satisfactory environment favorable to their development)
  • The request also discusses the implied rights to food and shelter.

Issues for determination:
PALU submits the following issues for determination by the Court (paraphrased):

(a) Whether the Court can be seized with the question of obligations concerning climate change under the Banjul Charter and other relevant instruments?

(b) Whether the Court can interpret and lay down applicable custom and treaty law regarding States’ obligations and duties in the context of climate change?

If these questions are resolved in the affirmative, the Court is invited to further determine:

(a) What, if any, are States’ human and peoples’ rights obligations to protect and safeguard the rights of individuals and peoples of the past (ancestral rights), and present and future generations?

(b) Whether States have positive obligations to protect vulnerable populations including environmental human rights defenders, indigenous communities, women, children, youth, future generations, the current generation, past generations, the elderly and people with disabilities from the impact of climate change in line with the relevant treaties?

(c) What human rights obligations do States have to facilitate a just, transparent, equitable and accountable transition in the context of climate change in Africa?

(d) What are the obligations of African States in implementing adaptation, resilience and mitigation measures in response to climate change?

(e) What, if any, are applicable human rights obligations of States to compensate for loss, damage and reparations?

(f) What responsibilities, if any, do African States have in relation to third parties, including international monopolies, multinational corporations and non-state actors operating on the continent, to ensure that international and regional treaties and laws on climate change are respected, protected, promoted and implemented?

(g) What, if any, is the nature of the obligations on African States to cooperate with other states especially historical emitters to limit global warming to below the 1.5°C threshold, to avert an existential climate crisis for present and future generations on the continent?

Further reading:
For more information on the advisory opinion request, see this post by Yusra Suedi.

Suggested citation:
African Court on Human and Peoples’ Rights, Request for an advisory opinion on the human rights obligations of African states in addressing the climate crisis, filed 2 May 2025 (pending).

Last updated:
23 May 2025

Categories
Elderly Emissions reductions/mitigation European Convention on Human Rights European Court of Human Rights Evidence Fair trial Gender / women-led Imminent risk Keywords Margin of appreciation Paris Agreement Private and family life Right to life Separation of powers Standing/admissibility Switzerland Victim status Vulnerability

Verein KlimaSeniorinnen et al. v. Switzerland

Summary:
In 2016, the Senior Women for Climate Protection Switzerland (German: ‘Verein KlimaSeniorinnen’), a Swiss organisation, brought proceedings concerning the alleged omissions of the Swiss federal government to adopt an adequate climate protection policy. They submitted that current domestic climate targets and measures are not sufficient to limit global warming to a safe level. This failure to prevent climate-related disasters, they argued, represents a failure to protect the rights under Articles 2 and 8 ECHR (the rights to life and respect for private and family life, respectively) of the organization’s members. In particular, they submitted evidence that their specific demographic (older women) is particularly impacted by heatwaves, citing health impacts and excess mortality risks. The respondent State, they argued, has failed to comply with its positive obligations to protect their rights, read in light of the environmental law principles of precaution and intergenerational equity.

The applicants also invoked two procedural rights under the Convention, namely the rights in Articles 6 and 13 ECHR (right to a fair trial and right to an effective remedy, respectively). In this regard they argued that the domestic courts failed to take their case seriously and provide an effective remedy to contest the violation of their rights.

These claims were rejected by the domestic instances at three levels of jurisdiction. The Swiss Federal Supreme Court, in its ruling, considered that the case represented an actio popularis, concerned questions better suited to the political arena, and did not raise an arguable claim of a rights violation. As a result, the applicants took their case to the European Court of Human Rights in Strasbourg.

This case was only the second climate change-related case to come to Strasbourg. Like the Duarte Agostinho case, this application raised novel questions before the Court, including the issue of victim status in climate cases, the standing of (environmental) NGOs to bring cases to the Court, and the extent of the State margin of appreciation in regard to environmental protection measures related to climate change, and the extent of the positive obligation to protect individuals from the risks to their life and health posed by climate change.

On 9 April 2024, in a historic ruling, the ECtHR declared this case admissible in part (for the association) and found that there had been violations of Articles 6(1) and 8 ECHR. In doing so, this case became the Court’s leading climate judgment, and a model for further climate-related cases in this system.

Third-party interventions:
There were an unusually large (for the ECtHR) number of third party interventions in this case: 23 in total, including eight States. The KlimaSeniorinnen association provided copies of all of the third-party interventions; these are available here. Some of the third-party interveners were also granted leave to intervene orally during the hearing before the Grand Chamber.

Grand Chamber hearing:
This was the first climate case heard by the European Court of Human Rights, followed immediately by the Carême v. France case. The Court has adjourned its examination of six other climate cases until the Grand Chamber has ruled in the three climate change cases before it, meaning that leading judgments clarifying the Convention obligations around cliamte change can be expected in these cases.

During the hearing, submissions were heard from the applicants, the respondent State, and two of the 23 total third-party interveners (the Government of Ireland & the European Network of National Human Rights Institutions (ENNHRI). A live summary of the hearing is available here.

General findings of the Court in its judgment of 9 April 2024:
The Court’s judgment is prefaced by a number of general findings that reflect its intended nature as a leading case. Noting the need to ensure effective protection of Convention rights without undermining the prohibition of actio popularis cases under the Convention system, the Court acknowledged that it had a role to play here, finding that “the current situation (…) involves compelling present‑day conditions, confirmed by scientific knowledge, which the Court cannot ignore in its role as a judicial body tasked with the enforcement of human rights.” At the same time, noting “the necessarily primary responsibility of the legislative and executive branches and the inherently collective nature of both the consequences and the challenges arising from the adverse effects of climate change”, it held that the issue of victim status here raised an issue of the separation of powers, requiring particular consideration. Noting the global and complex nature of climate change, it held that “the necessity of combating climate change involves various conflicts, the weighing‑up of which falls, as stated previously, within the democratic decision‑making processes, complemented by judicial oversight by the domestic courts and this Court.”

In light of this, and before assessing the case, the Court set out a number of general considerations relating to climate‑change cases. This includes questions of causation, including the finding that despite indirect causal links, “the essence of the relevant State duties in the context of climate change relates to the reduction of the risks of harm for individuals”, meaning that it could not apply “a strict conditio sine qua non requirement” to matters of causation. This section also includes issues of proof and evidence, and references the “evolution of scientific knowledge, social and political attitudes and legal standards concerning the necessity of protecting the environment”. Here the Court established that “there are sufficiently reliable indications that anthropogenic climate change exists, that it poses a serious current and future threat to the enjoyment of human rights guaranteed under the Convention, that States are aware of it and capable of taking measures to effectively address it, that the relevant risks are projected to be lower if the rise in temperature is limited to 1.5°C above pre-industrial levels and if action is taken urgently, and that current global mitigation efforts are not sufficient to meet the latter target” (para. 436). And, importantly, it discarded the “drop in the bucket” argument made by the respondent State, stating that “The relevant test does not require it to be shown that “but for” the failing or omission of the authorities the harm would not have occurred. Rather, what is important, and sufficient to engage the responsibility of the State, is that reasonable measures which the domestic authorities failed to take could have had a real prospect of altering the outcome or mitigating the harm” (para. 444). It also stressed that there is no right to a healthy environment in the ECHR, but that it can and has nonetheless dealt with other environmental cases, reiterating its past approach that “the crucial element which must be present in determining whether, in the circumstances of a given case, an environmental harm has adversely affected one of the rights safeguarded by the Convention is the existence of a harmful effect on a person and not simply the general deterioration of the environment” (para. 446). It also noted that it is conscious of its subsidiary role and the direct democratic legitimation of national authorities to make decisions on climate policy, but that where State policy affects Convention rights, it has competence to intervene and “the Court’s competence in the context of climate-change litigation cannot, as a matter of principle, be excluded” (paras. 449-451).

The Court also set out the relevant principles for interpreting the ECHR, including the living instrument approach and the fact that while the Court “does not have the authority to ensure compliance with international treaties or obligations other than the Convention” — including the Paris Agreement — it has consistently noted that it will interpret the Convention in harmony with other international law.

Admissibility:
On 9 April 2024, the Court declared this case admissible in part. Under Article 34 ECHR, it used this judgment as an opportunity to create new standards on victim status specific to climate-related cases. In doing so, it set out the general standards on victim status, noting that it did not admit actio popularis cases and that the ECHR “does not permit individuals or groups of individuals to complain about a provision of national law simply because they consider, without having been directly affected by it, that it may contravene the Convention” (para. 460). It noted that the notion of victim status must be applied flexibly, and that it’s distinct from locus standi, i.e. representative actions.

The Court then issued general considerations on victim status and locus standi in climate cases, noting that “there is cogent scientific evidence demonstrating that climate change has already contributed to an increase in morbidity and mortality, especially among certain more vulnerable groups, that it actually creates such effects and that, in the absence of resolute action by States, it risks progressing to the point of being irreversible and disastrous” (para. 478).

It also held that (para. 479): the critical issues around climate change “arise from failures to act, or inadequate action”, meaning omissions in legislative or regulatory frameworks that require a special approach to victim status. Importantly, the Court also clarified that its findings on victim status in the context of complaints about omissions in climate policy “is without prejudice to the determination of victim status in circumstances where complaints by individuals concern alleged violations arising from a specific individual loss or damage already suffered by them” (para. 480), meaning that the special approach spelled out for mitigation cases need not preclude other types of claims. However, it held, in the context of climate change, “a potentially a huge number of persons could claim victim status under the Convention”, which “would not sit well with the exclusion of actio popularis from the Convention mechanism and the effective functioning of the right of individual application” (para. 483). The Court clarified the difficult situation in which it found itself, between “disrupting national constitutional principles and the separation of powers” and depriving individuals affected in their rights from “any judicial recourse before the Court”, noting the “distinct representational disadvantage” of those most affected (para. 484). It then, in para 487 of the judgment, spelled out the criteria for individual victim status in climate cases. These are:

  • (a)  “a high intensity of exposure to the adverse effects of climate change”, i.e. a significant level and severity of risk of adverse consequences; and
  • (b) “a pressing need to ensure the applicant’s individual protection, owing to the absence or inadequacy of any reasonable measures to reduce harm.”

Given that there is no actio popularis under the Convention, the Court held, “the threshold for fulfilling these criteria is especially high”, and will depend on specific vulnerabilities and local circumstances as well as including considerations relating to: “the nature and scope of the applicant’s Convention complaint, the actuality/remoteness and/or probability of the adverse effects of climate change in time, the specific impact on the applicant’s life, health or well-being, the magnitude and duration of the harmful effects, the scope of the risk (localised or general), and the nature of the applicant’s vulnerability” (para. 488).

As to the standing of associations, the Court generally reiterated its previous Gorraiz Lizarraga and Others judgment, which had allowed representative standing for an organisation. It noted that recourse to collective bodies like associations can make defense of one’s interests more accessible in certain circumstances, including the context of climate change, noting that this general principle was also reflected in the Aarhus Convention. The Court then set out some general principles on organizations’ victim status versus their standing as representatives of victims. In light of the former, it reiterated past case-law finding that “an association cannot rely on health considerations or nuisances and problems associated with climate change which can only be encountered by natural persons”. But it also recognized that understandings of the importance of litigation by associations had evolved, and that climate cases are complex and demanding and affect many individuals (para. 498). In addition, “the special feature of climate change as a common concern of humankind and the necessity of promoting intergenerational burden-sharing in this context (…), speak in favour of recognising the standing of associations before the Court in climate-change cases” (para. 499). However, this should not mean allowing an actio popularis: a test for associations’ standing is required. To design its test, the Court had regard to the Aarhus Convention while also noting key difference between its approach and that under Aarhus.

The test it devised for associations looks as follows (§ 502): associations will have locus standi to bring climate cases about impacts on human lives and health where they:

  • (a) have been lawfully established in the relevant jurisdiction, or have standing to act there;
  • (b) pursue, under their statutory objectives, a dedicated purpose of defending the human rights of their members or other affected individuals in the jurisdiction concerned, and
  • (c) are genuinely qualified and representative to act on behalf of affected individuals in the jurisdiction who are subject to specific threats on their lives, health or well-being from climate change.

The Court also noted that it would consider additional factors, like the purpose for which the association was established, its non-profit character, the nature and extent of its activities, its membership and representativeness, its principles and transparency of governance and whether standing is in the interests of the proper administration of justice.

There was no need, however, to show that those on whose behalf the case has been brought would themselves have met the climate-specific victim-status requirements for individuals as set out earlier in the judgment.

Because the Court joined its actual analysis of the victim status requirement to the merits of the case, this is discussed in the following section.

Merits:
In setting out general principles on the applicability of Article 2 ECHR (the right to life), the Court noted past cases where the right was applicable to situations where there is a threat to life, but “where the person concerned did not die”. Although noting the evidence on vulnerable populations, the Court reiterated that the appropriate test here is one of whether there is a “real and imminent” risk to life, meaning that the risk must be serious, genuine, sufficiently ascertainable and in physical proximity. It then tailored this last aspect to the nature of climate change, stating that it would suffice to show “an element of material and temporal proximity of the threat to the harm complained of by the applicant”. This means that, provided an applicant has victim status, “a serious risk of a significant decline in a person’s life expectancy owing to climate change ought also to trigger the applicability of Article 2.”

As for Article 8 ECHR, the Court stated generally that it was necessary to show an “actual interference” with the right, meaning that there needs to be “a direct and immediate link between the alleged environmental harm and the applicant’s private or family life or home”, and a certain level of severity. Drawing on its past environmental case-law, the Court went on to establish that “Article 8 must be seen as encompassing a right for individuals to effective protection by the State authorities from serious adverse effects of climate change on their life, health, well-being and quality of life” (para. 519).

The Court then considered the applicability of Art. 8 ECHR to the case before it. As concerned the applicant association, it found that it met the criteria for standing by associations as set out earlier in the judgment, describing the KlimaSeniorinnen association as “a vehicle of collective recourse aimed at defending the rights and interests of individuals against the threats of climate change in the respondent State”. The complaints pursued by the association on behalf of its members, it held, fall within the scope of Article 8. The association accordingly had locus standi, and Article 8 was declared applicable to its complaint.

On applicants 2-5 (the individual applicants), the Court held that the threshold for meeting its two criteria (high-intensity exposure and a pressing need to ensure protection) was high. It was not enough to show that they were particularly vulnerable to the effects of climate change. The crucial paragraph of the judgment here is para. 533: “while it may be accepted that heatwaves affected the applicants’ quality of life, it is not apparent from the available materials that they were exposed to the adverse effects of climate change, or were at risk of being exposed at any relevant point in the future, with a degree of intensity giving rise to a pressing need to ensure their individual protection (…). It cannot be said that the applicants suffered from any critical medical condition whose possible aggravation linked to heatwaves could not be alleviated by the adaptation measures available in Switzerland or by means of reasonable measures of personal adaptation”. Their complaint was accordingly declared inadmissible.

On the claims under Article 2, the Court held that it was not necessary to analyze this further, noting that its analysis would “have regard to the principles developed also under Article 2, which to a very large extent are similar to those under Article 8 (…) and which, when seen together, provide a useful basis for defining the overall approach to be applied in the climate-change context under both provisions.”

The Court then recapitulated more general principles now on the merits proper. It held that the Article 2 and 8 positive obligations are generally quite similar, requiring the State:

  • (a)  to put in place an adequate legislative and administrative framework and govern the licensing, setting-up, operation, security and supervision of the activity;
  • (b) to apply that framework effectively in practice;
  • (c) to remain within their margin of appreciation;
  • (d) to exercise due diligence and consider all competing interests;
  • (f) to provide access to essential information enabling individuals to assess risks to their health and lives;

Noting also that “the scope of the positive obligations imputable to the State in the particular circumstances will depend on the origin of the threat and the extent to which one or the other risk is susceptible to mitigation”.

In reviewing the domestic decision-making process, the Court has particular regard to the following considerations:

  • (a) Its subsidiary role;
  • (b) The need to consider all of the procedural aspects;
  • (c) The presence of appropriate investigations and studies;
  • (d) The public’s access to the conclusions of the relevant studies; and
  • (e) Whether or not the individuals concerned had an opportunity to protect their interests in the environmental decision-making process, i.e. participate effectively.

Turning to States’ positive obligations relation to climate, it first considered the State margin of appreciation. Having regard to the scientific evidence, the Court considered it justified to give climate protection considerable weight against competing considerations.

Regarding the margin of appreciation it distinguished between the scope of the margin as regards (i) the State’s commitment combating climate change and setting objectives in this respect, and (ii) the choice of means designed to achieve those objectives. The margin is more narrow with regard to the former. For the latter aspect, i.e. the choice of means, States have a wide margin of appreciation.

As to the content of States’ positive obligations under Article 8, this is primarily a regulatory obligation. This means that, in line with their international commitments, States need to put in place regulations and measures to prevent climate change. The global aims in the Paris Agreement are not enough; and “must inform the formulation of domestic policies, it is obvious that the said aims cannot of themselves suffice as a criterion for any assessment of Convention compliance of individual Contracting Parties to the Convention in this area. This is because “each individual State is called upon to define its own adequate pathway for reaching carbon neutrality, depending on the sources and levels of emissions and all other relevant factors within its jurisdiction.”

This means that Article 8 ECHR “requires that each Contracting State undertake measures for the substantial and progressive reduction of their respective GHG emission levels, with a view to reaching net neutrality within, in principle, the next three decades” (ca. 2050). To avoid a disproportionate burden on future generations, this means immediate action needs to be taken and adequate intermediate reduction goals must be set for the interim period. The Court spelled out that this must be part of a binding regulatory framework at the national level, followed by adequate implementation, and that “the relevant targets and timelines must form an integral part of the domestic regulatory framework, as a basis for general and sectoral mitigation measures.”

In para. 550, the Court set out the criteria it would use to decide whether a State has remained within its margin of appreciation, namely whether the authorities had due regard to the need to:

  • “(a) adopt general measures specifying a target timeline for achieving carbon neutrality and the overall remaining carbon budget for the same time frame, or another equivalent method of quantification of future GHG emissions, in line with the overarching goal for national and/or global climate-change mitigation commitments;
  • (b) set out intermediate GHG emissions reduction targets and pathways (by sector or other relevant methodologies) that are deemed capable, in principle, of meeting the overall national GHG reduction goals within the relevant time frames undertaken in national policies;
  • (c) provide evidence showing whether they have duly complied, or are in the process of complying, with the relevant GHG reduction targets (…);
  • (d) keep the relevant GHG reduction targets updated with due diligence, and based on the best available evidence; and
  • (e) act in good time and in an appropriate and consistent manner when devising and implementing the relevant legislation and measures.”

These mitigation measures, it added, must be supplemented by adaptation measures aimed at alleviating the most severe or imminent consequences of climate change, taking into account particular protection needs.

The Court also set out procedural safeguards, namely

  • (a) The publicity of relevant information; and
  • (b) The availability of procedures to take into account the views of the public, and in particular the interests of those affected.

Applying these principles to the case before it, the Court held that it could “take into account the overall situation in the respondent State”, including relevant information that came to light after the domestic proceedings, but that here, given an ongoing domestic legislative process, its assessment was limited to examining the domestic legislation as it stood on the date of the (internal) adoption of the judgment, which was 14 February 2024.

The Court noted that the currently existing 2011 CO2 Act (in force since 2013) required that emissions reductions of 20% by 2020 compared with 1990 levels. However, as far back as August 2009, the Swiss Federal Council had found that the scientific evidence under a 2-2.4°C warming limit required a reduction in global emissions of at least 50-85% by 2050 compared with 1990 levels. Industrialised countries (like Switzerland) had to reduce their emissions by 25-40% by 2020 compared to 1990 levels. for the higher 1.5°C limit, emissions would have to decline continuously, and the pathway 20% by 2020 pathway was insufficient to achieve that objective.

As the Government acknowledged, domestic assessments found that even the reduction target for 2020 had been missed. Between 2013 and 2020, Switzerland reduced its emissions by around 11% compared with 1990 levels, indicating the insufficiency of the authorities’ past action to take the necessary measures to address climate change.

A proposed revision of the CO2 Act for 2020-2030 proposed an overall reduction of 50% of emissions, including a domestic reduction of 30% by 2030 and measures to be taken abroad (“external emissions”). This proposal was rejected in a popular referendum in June 2021. Here the Court held that, “irrespective of the way in which the legislative process is organised from the domestic constitutional point of view”, there was a legislative lacuna, pointing to a failure on the part of the respondent State to fulfil its positive obligations under Article 8 to devise a regulatory framework setting the requisite objectives and goals.

Reflecting the updated Swiss NDC, the Climate Act was enacted, and envisages the principle of a net‑zero emissions target by 2050, but several lacunae remain, and “the Court has difficulty accepting that the mere legislative commitment to adopt the concrete measures “in good time” (…) satisfies the State’s duty”, especially because “the introduction of that new legislation is not sufficient to remedy the shortcomings identified in the legal framework applicable so far.”

Currently, the Swiss goal used more emissions than even a globally equal “per capita emissions” approach would entitle it to use.

The Court rejected the Government’s argument that there was no established methodology to determine a country’s carbon budget, and noted that an NDC under the Paris Agreement was not an appropriate substitute. The Court approved of the reasoning of the German Federal Constitutional Court in Neubauer, where it rejected the argument that it was impossible to determine the national carbon budget by emphasizing the principle of common but differentiated responsibilities under the UNFCCC and the Paris Agreement.

Thus, “while acknowledging that the measures and methods determining the details of the State’s climate policy fall within its wide margin of appreciation, in the absence of any domestic measure attempting to quantify the respondent State’s remaining carbon budget, the Court has difficulty accepting that the State could be regarded as complying effectively with its regulatory obligation under Article 8” (para. 572). This meant that there had been a violation of Article 8 of the Convention (by a majority of 16-1).

On the issue of Article 6 ECHR, concerning the right of access to a court, the Court held that the issue of victim status should again be joined to the merits, and the Court again dove in with general principles, finding that it did not per se need to tailor these principles to the nature of climate change cases.

Examining these principles in the case before it, the Court held that “it cannot be said that the individual applicants’ claim was frivolous or vexatious or otherwise lacking in foundation in terms of the relevant domestic law (…). The Court is unable to agree with the finding of the FSC that the individual applicants’ claim could not be considered arguable for the purposes of Article 6 § 1 of the Convention” (para. 618). It went on to find that interests defended by the association meant that the “dispute” raised by it had a direct and sufficient link to its members’ rights. Finding that Article 6 (1) applied to the complaint of the applicant association, the Court also considered it to have victim status.

For the individual applicants, however, the Court found that the dispute they had brought concerning the failure to effectively implement mitigation measures was not directly decisive for their specific rights. They had not shown that there was a sufficiently imminent and certain effect on their individual rights, and this part of their complaint was inadmissible.

For the association, among other things, the Court rejected the domestic courts’ findings that there was still some time to prevent global warming from reaching the critical limit, and noted that they “did not engage seriously or at all with the action brought by the applicant association.” There had accordingly been a violation of Art. 6(1) ECHR, with the Court emphasizing “the key role which domestic courts have played and will play in climate-change litigation”.

The applicants also complained that they had not had access to an effective remedy within the meaning of Article 13 of the Convention. Here the Court noted that Article 6 is a lex specialis to Article 13, the latter being absorbed by the more stringent requirements of Article 6, so there was no separate issue in its regard.

Remedies:
The individual applicants had made requests for just satisfaction for damage under Article 41 ECHR, but the organisation did not, so no award was made. The Court did award costs and expenses to the amount of EUR 80,000.

The applicants had also made an Art. 46 claim for a general measures order. Here the Court noted that it is primarily for the State to choose, under the supervision by the Committee of Ministers, the means to be used domestically to discharge its obligation to comply with the Court’s judgment, as long as the means are compatible with the conclusions and spirit of that judgment. The Court went on to hold that, “having regard to the complexity and the nature of the issues involved, the Court is unable to be detailed or prescriptive as regards any measures to be implemented in order to effectively comply with the present judgment.” It noted the State’s broad margin of appreciation choose the means to discharge its Convention obligations, and found that the State was thus better placed than the Court to decide which specific measures to take.

Separate opinions:
A separate opinion by Judge Eicke is annexed to this judgment. He disagreed with the majority in several points, especially victim status and the merits of Art. 8. He presented his view as a disagreement of a “fundamental nature” that “goes to the very heart of the role of the Court within the Convention system and, more generally, the role of a court in the context of the unique and unprecedented challenges posed to humanity” because the majority had exceeded “the permissible limits of evolutive interpretation”.

According to Judge Eicke, the majority judgment creates a new right to “effective protection by the State authorities from serious adverse effects on their life, health, well‑being and quality of life arising from the harmful effects and risks caused by climate change”. While acknowledging the seriousness of the threat of climate change, and noting “(a) the absolute need for urgent action and (b) the sheer complexity of the challenges climate change (and the other aspects of the “triple planetary crisis”) pose (geo-)politically, practically, logistically as well as legal,” he argues that the principle of common but differentiated responsibilities and respective capabilities, in the light of different national circumstances (Article 2(2) Paris Agreement) is “difficult to reconcile (if not wholly inconsistent) with the Court’s primary role of ensuring observance of a common minimum standard of protection applicable equally to all Contracting Parties”.

On victim status, Eicke argues that “there was, in fact, no dispute and no uncertainty about the “victim” status of the individual applicants in relation to the Article 6 § 1 complaint in this case; and therefore no need to join that question to the merits”. He sets out and adheres to the previously established case-law on victim status, refusing to join the majority in creating a new approach tailored to climate cases and arguing that exceptions should only be possible where individual applications document victim status are not “ever” likely to be possible. He argues that the judgment creates an actio popularis.

Under Articles 2 and 8, Eicke argues that while it would have been possible to find a procedural violation of Articles 2 or 8, “the substantive violation of Article 8 which the majority seeks to construct from this starting premise has no basis either in the text of the Convention nor in any of the Court’s case-law.” He considers that “the Court would already have achieved much if it had focussed on a violation of Article 6 of the Convention and, at a push, a procedural violation of Article 8 relating in particular to (…) the right of access to court and of access to information”. He accuses the majority of trying “to run before it could walk”, and “giving (false) hope that litigation and the courts can provide “the answer” without there being, in effect, any prospect of litigation (especially before this Court) accelerating the taking of the necessary measures towards the fight against anthropogenic climate change”, and mentions the risk that this judgment will distract from other efforts to tackle climate change.

Implementation measures taken:

N/A

Date of decision:
It was announced on 26 March 2024 that the Grand Chamber would issue its judgment in this case, along with the two other climate cases pending before the Grand Chamber, in a hearing to be held on 9 April 2024 at 10:30 a.m. The judgment and a summary were made available on the Court’s HUDOC database immediately after the hearing.

Type of Forum:
Regional

Status of case:
This case was communicated to the respondent State, Switzerland, on 17 March 2021. On 26 April 2022, a Chamber of the Court relinquished jurisdiction in favour of the Grand Chamber, held a public hearing in this case on 29 March 2023. A webcast of the hearing is available here. On 9 April 2024, the Court issued its judgment in the case.

Suggested case citation:
ECtHR, Verein KlimaSeniorinnen Schweiz and Others v. Switzerland, no. 53600/20, judgment (Grand Chamber) of 9 April 2024.

Links:

Webcast of the hearing:
To watch a webcast recording of the public hearing in this case, which was held before the Grand Chamber of the European Court of Human Rights on 29 March 2023, click here (available in French and English).

Last updated:
9 April 2024

Categories
2023 Children and young people Domestic court Emissions reductions/mitigation Evidence Fossil fuel extraction Human dignity Indigenous peoples' rights Public trust doctrine Right to a healthy environment Right to health Standing/admissibility United States of America

Held and Others v. Montana

Summary:
In Held and Others, sixteen young plaintiffs aged between two and eighteen brought a case against the U.S. state of Montana alleging violations of the state constitution due to climate change. The youth plaintiffs in this case, which is to some extent comparable to the Juliana litigation, alleged that they are already experiencing ‘a host of adverse consequences’ from anthropogenic climate change in Montana, including increased temperatures, changing weather patterns, more acute droughts and extreme weather events, increasing wildfires and glacial melt. Fossil fuels extracted in Montana cause emissions higher than those of many countries, including Brazil, Japan, Mexico, Spain, or the United Kingdom. The plaintiffs argued that this was causing health risks, especially for children, and that the defendants, among them the state of Montana, its Governor, and various state agencies, had “act[ed] affirmatively to exacerbate the climate crisis” despite their awareness of the risks to the applicants. On 14 August 2023, Judge Kathy Seeley ruled wholly in favor of the youth plaintiffs, declaring that Montana had violated their constitutional rights and invalidating the statutory rule forbidding state authorities from considering the impacts of GHG emissions or climate change in decision-making related to fossil fuel extraction. In 2025, 13 of the 16 original plaintiffs filed non-compliance proceedings based on new state legislation.

Claims made:
The plaintiffs challenged the constitutionality of fossil fuel-based provisions of Montana’s State Energy Policy Act along with a provision of the Montana Environmental Policy Act which forbids state authorities from considering the impacts of GHG emissions or climate change in their environmental reviews (the “MEPA Limitation”). They also challenged the aggregate acts that the state has taken to implement and perpetuate a fossil fuel-based energy system under these statutes.

The plaintiffs sought a declaration that their right to a clean and healthy environment includes a right a stable climate, and that existing approaches to greenhouse gas emissions in Montana violate constitutional provisions, including the right to a clean and healthy environment; the right to seek safety, health, and happiness; and the right to individual dignity and to equal protection. They also sought injunctive relief, namely an order to account for Montana’s greenhouse gas emissions and to develop and implement an emissions reductions plan.

Decision on the admissibility:
On 4 August 2021, a the Montana First Judicial District Court for Lewis and Clark County declared the case admissible in part. The prayer for injunctive relief in terms of emissions accounting, a remedial plan or policy, the appointment of expert to assist the court, and retain jurisdiction until such orders are complied with were rejected. However, the court declared the constitutional rights claims admissible, including the claim about the plaintiffs’ ‘fundamental constitutional right to a clean and healthful environment’, which — as the plaintiffs submitted — ‘includes a stable climate system that sustains human lives and liberties’.

Judge Seeley’s Ruling of 14 August 2023:
After a trial held from 12-23 June 2023, Judge Kathy Seeley of the First Judicial District Court of Montana issued a ruling in this case on 14 August 2023. Noting that “[t]he science is clear that there are catastrophic harms to the natural environment of Montana and Plaintiffs and future generations of the State due to anthropogenic climate change”, she ruled wholly in favor of the plaintiffs, declaring that the state of Montana had violated their constitutional rights to equal protection, dignity, liberty, health and safety, and public trust, all of which are predicated on their right to a clean and healthful environment (p. 92-93).

In doing so, Judge Seeley ruled that the youth plaintiffs had standing to bring the case because they had proven that they had experienced significant injuries. The court set out the different impacts on the plaintiffs at length (p. 46-64). It ultimately found that the plaintiffs “have experienced past and ongoing injuries resulting from the State’s failure to consider GHGs and climate change, including injuries to their physical and mental health, homes and property, recreational, spiritual, and aesthetic interests, tribal and cultural traditions, economic security, and happiness” (p. 86 of the ruling). The judge also ruled that while mental health injuries based on state inaction on climate change do not on their own constitute a cognizable injury, “mental health injuries stemming from the effects of climate change on Montana’s environment, feelings like loss, despair, and anxiety, are cognizable injuries” (p. 86-87). The ruling recognizes that “[e]very additional ton of GHG emissions exacerbates Plaintiffs’ injuries and risks locking in irreversible climate injuries”, and that these injuries “will grow increasingly severe and irreversible without science-based actions to address climate change” (p. 87). As children and youth, the plaintiffs are disproportionately impacted by fossil fuel pollution and climate impacts, and their injuries are “concrete, particularized, and distinguishable from the public generally” (p. 87).

On causation, and having heard and evaluated testimony from several expert witnesses, the Court extensively reviewed the scientific evidence concerning the causation and progression of anthropogenic climate change and identified the Earth’s energy imbalance as the critical metric for determining levels of global warming (p. 22). Having established that “Montana is a major emitter of GHG emissions in the world in absolute terms, in per person terms, and historically”, and noting the state government’s continuing approval of fossil fuel projects despite its already extensive production of oil, gas and coal, the Court found that there was a “fairly traceable connection” between Montana’s statutes, its GHG emissions, climate change, and the injuries suffered by the plaintiffs (p. 87). Noting that the state government had the authority to limit fossil fuel-related activities, and having regard to the fact that the MEPA Limitation causes the state to ignore climate impacts and renewable energy alternatives to fossil fuels, as well as noting the economic and environmental advantages of a green energy transition for Montana, the Court noted that “current barriers to implementing renewable energy systems are not technical or economic, but social and political” (p. 83). The state of Montana, it held, “authorizes fossil fuel activities without analyzing GHGs or climate impacts, which result in GHG emissions in Montana and abroad that have caused and continue to exacerbate anthropogenic climate change” (p. 88). It noted also that these emissions were “nationally and globally significant”, and could accordingly not be considered de minimis; they “can be measured incrementally and cumulatively both in terms of immediate local effects and by mixing in the atmosphere and contributing to global climate change and an already destabilized climate system” (p. 88).

On the redressability of these impacts, the Court noted that the psychological satisfaction of the ruling itself did not constitute sufficient redress, and that declaring the relevant state statutory rules unconstitutional would provide partial redress because ongoing emissions will continue to cause harms to the plaintiffs. Noting that “[i]t is possible to affect future degradation to Montana’s environment and natural resources and injuries to these Plaintiffs”, and applying strict structiny to the state’s statutes, the Court found that the MEPA Limitation violates the right to a clean and healthful environment under the Montana Constitution, which protects children and future generations (among others) and includes the protection of the climate system. As a result, the Court tested whether the MEPA Limitation was narrowly tailored to serve a compelling government interest, finding that neither had the state authorities shown that it served a compelling governmental interest, nor was it narrowly tailored to serve any interest.

As a result, the judge invalidated the Montana legislation that promoted fossil fuels and prohibited analysis of GHG emissions and corresponding climate impacts.

Proceedings on non-compliance:
On 10 December 2025, a petition on behalf of 13 of the original 16 plaintiffs in the case filed a petition for original jurisdiction with the Montana Supreme Court. They challenged statutes passed by the Montana legislature in 2025, arguing that they weaken the state’s environmental protection laws and undermine the state’s constitutional obligation to protect the environment. The petition seeks a declaration that these statutes are unconstitutional, and to overturn them.

The petition in these follow-up proceedings is available below:

Date filed:
13 March 2020

Date of admissibility decision:
4 August 2021

Date of Ruling:
14 August 2023

More information:
The original complaint is available from the Western Environmental Law Center.

The admissibility decision is available on climatecasechart.com.

Judge Seeley’s findings of fact, conclusions of law and order of 14 August 2023 are available below.

Suggested citations:
Montana First District Court for Lewis and Clark county, Held and others v. State of Montana and others, Findings of Fact, Conclusions of Law, and Order, 14 August 2023, Cause no. CDV-2020-307.

Categories
Adaptation Biodiversity Children and young people Climate activists and human rights defenders Climate-induced displacement Deforestation Emissions reductions/mitigation Evidence Gender / women-led Indigenous peoples rights Indigenous peoples' rights Inter-American Human Rights System Loss & damage Paris Agreement Right to a healthy environment Right to health Right to life Right to property Rights of nature Vulnerability

Climate Advisory Opinion of the IACtHR (OC 32/2025)

Summary:
On 3 July 2025, the Inter-American Court of Human Rights (IACtHR) issued its long-awaited advisory opinion on climate change, at the request of the governments of Chile and Colombia.

Advisory opinion request:
On 9 January 2023, Colombia and Chile jointly filed a request for an advisory opinion on the climate emergency and human rights to the IACtHR. The two governments requested clarification of the scope of States’ obligations, both in their individual and collective dimensions, in responding to the climate emergency within the framework of international human rights law, taking into account the different effects that climate change has on people in different regions and on different population groups, nature and human survival. The governments asked the Court to answer a series of questions grouped into six thematic areas, namely on:

A. The scope of States’ obligations to protect and prevent, including regarding their obligations to mitigate, adapt, regulate and monitor, and their response to loss and damage;

B. States’ obligations to protect the right to life given the existing climate science, and taking into account the right of access to information and transparency of information, including under the Escazú Agreement;

C. States’ obligations with respect to the rights of children and new generations, given especially the vulnerability of children;

D. On the State’s obligations concerning consultative and judicial procedures, taking into account the limited remaining carbon budget;

E. The protective and preventative obligations concerning environmental and land rights defenders, as well as women, indigenous peoples and Afro-descendant communities; and

F. Shared and differentiated obligations and responsibilities in terms of the rights of States, the obligation of cooperation and given the impacts on human mobility (migration and forced displacement of people).

Extended summary of the request:
In their request to the IACtHR, the two governments submitted that they are already dealing with the consequences of the climate emergency, including the proliferation of droughts, floods, landslides and fires. These, they submitted, underscore the need for a response based on the principles of equity, justice, cooperation and sustainability, as well as human rights. The two governments noted that climate change is already putting humans and future generations at risk, but that its effects are not being experienced uniformly across the international community. Instead, given their geography, climatic conditions, socioeconomic conditions and infrastructure, they are particularly being felt in the most vulnerable communities, including several countries in the Americas. They emphasized that these effects are not proportionate to these countries’ and communities’ contribution to climate change.

The governments, in their request, emphasized the relevance of the right to a healthy environment, as well as other interrelated substantive and procedural rights (affecting life, human survival and future generations). They reviewed the existing scientific evidence concerning the impacts and progression of climate change from the IPCC, and noted the vulnerability of the Andean region. The two governments referred to the 2017 Advisory Opinion of the IACtHR, which recognized the right to a healthy environment as an autonomous and individual right, and referred to the negative effects of climate change. However, they argued, there is a need to further clarify the human rights impacts of climate change, and corresponding obligations. In this regard, they raised the existence also of collective rights for the protection of nature under international human rights and environmental law, and cited the need to protect fundamental biomes like the Amazon and to understand States’ shared but differentiated responsibilities in a way that copes with loss and damage. The two governments invited the Court to set out clear standards against the background of litigation and related developments.

Consultation procedure:
In accordance with the Rules of Procedure of the IACtHR (Art. 73(3)), all interested parties (individuals and organizations) are invited to present a written opinion on the issues covered in the advisory opinion request. The President of the Court has established 18 August 2023 as the deadline for doing so. More information is available here.

Advisory opinion of 3 July 2025:
On 3 July 2025, following an oral hearing, the IACtHR issued its advisory opinion in these proceedings (in Spanish, with the text in English to follow). In a 234-page opinion, the Court addressed the questions raised by the governments of Chile and Colombia in their request.

The advisory opinion covers a wide range of relevant issues and obligations, and provides in-depth clarifications of the legal issues raised. It covers, in short:

  • The procedure, competence of the Court and admissibility of the request, as well as a number of other preliminary considerations, including about the (scientific and other) sources used by the Court and the scope of the opinion.
  • The facts of the climate emergency, including its causes, differential contributions of different actors, and its impacts on natural systems, humans, vulnerable territories and ecosystems, as well as the need for urgent action, the possibilities and need for mitigation, the need for adaptation, and the seriousness of climate impacts.
  • The complexity of required responses, including discussions of resilience and sustainable development as a vehicle for protection of both human rights and the environment.
  • The international legal framework around climate change, applicable norms and frameworks, including international investment law, human rights, international environmental law and climate change treaties. The Court also reviewed the case-law of other adjudicators in the context of climate change.
  • The obligations of States in the context of the climate emergency, including the scope of human rights obligations to respect rights, protect rights (including a reinforced due diligence obligation), and the obligation to take measures to ensure progressive realization of economic, social and cultural rights. This includes discussion of various substantive rights, including particularly the right to a healthy environment but also the rights to life, physical integrity, health, private and family life, property and home, freedom of movement and residence, water and food, work and social security, culture and education. The advisory opinion also includes consideration of procedural rights and the link between these rights and democracy, the right to science and recognition of local knowledge, the right of access to information (and combatting disinformation), the right to political participation and access to justice as well as protection of environmental defenders and equality and non-discrimination norms. In this latter regard, the opinion considers the differential protection owed to children and youth, to Indigenous and tribal peoples, Afrodescendant communities, peasants and those involved in fisheries. It also considers the differential effect of climate change and the implications for fight against poverty.

Opinion of the Court:
Appended to the Court’s extensive consideration of the relevant issues and obligations is its concrete opinion, which reads as follows (translation from the original Spanish, to be replaced with the English-language translation by the Court once available):

THE COURT DECIDES
Unanimously, that:

It is competent to issue the present Advisory Opinion, in the terms of paragraphs 14 to 23.

AND IS OF THE OPINION
Unanimously, that:

  1. According to the best available science, the current situation constitutes a climate emergency due to the accelerated increase in global temperature, produced by diverse activities of anthropogenic origin, undertaken unequally by the States of the international community, which incrementally affect and seriously threaten humanity and, especially, the most vulnerable people. This climate emergency can only be adequately addressed through urgent and effective actions for mitigation, adaptation and progress towards sustainable development, articulated with a human rights perspective, and under the prism of resilience, in the terms of paragraphs 183 and 205 to 216.

    Unanimously, that:
  2. By virtue of the general obligation to respect rights, States have the obligations indicated in paragraphs 219 to 223.

    Unanimously, that:
  3. Under the general obligation to ensure rights, States have an obligation to act in accordance with a standard of enhanced due diligence to counteract the human causes of climate change and protect people under their jurisdiction from climate impacts, in particular those who are most vulnerable, in the terms of paragraphs 225 to 237.

    By six votes in favor and one against, that:
  4. By virtue of the general obligation to ensure the progressive development of economic, social, cultural and environmental rights, States must allocate the maximum available resources to protect persons and groups who, because they are in situations of vulnerability, are exposed to the most severe impacts of climate change, in the terms of paragraphs 238 to 243.
    Judge Patricia Pérez Goldberg dissents.

    Unanimously, that:
  5. By virtue of the general obligation to adopt domestic law provisions, States must integrate into their domestic legal framework the necessary regulations to ensure the respect, guarantee and progressive development of human rights in the context of the climate emergency, in the terms of paragraphs 244 to 246.

    Unanimously, that:
  6. By virtue of the obligation to cooperate, the States are obliged to cooperate in good faith to advance in the respect, guarantee and progressive development of human rights threatened or affected by the climate emergency, in the terms of paragraphs 247 to 265.

    By four votes in favor and three against, that:
  7. The recognition of Nature and its components as subjects of rights constitutes a normative development that makes it possible to reinforce the protection of the integrity and functionality of ecosystems in the long term, providing effective legal tools in the face of the triple planetary crisis and facilitating the prevention of existential damage before it becomes irreversible. This conception represents a contemporary manifestation of the principle of interdependence between human rights and the environment, and reflects a growing trend at the international level aimed at strengthening the protection of ecological systems against present and future threats, in accordance with paragraphs 279 to 286.
    Judge Nancy Hernández López, Judge Humberto Sierra Porto and Judge Patricia Pérez Goldberg dissenting.

    By four votes in favor and three against, that:
  8. By virtue of the principle of effectiveness, the imperative prohibition of anthropogenic conducts that may irreversibly affect the interdependence and vital balance of the common ecosystem that makes the life of the species possible constitutes a norm of jus cogens, in accordance with paragraphs 287 to 294.
    Judge Nancy Hernández López, Judge Humberto Sierra Porto and Judge Patricia Pérez Goldberg dissenting.

    By a vote of five in favor and two partially against, that:
  9. The right to a healthy climate, understood as a component of the right to a healthy environment, protects in its collective dimension the present and future humanity, as well as Nature, in the terms of paragraphs 298 to 316.
    Judge Nancy Hernández López and Judge Patricia Pérez Goldberg dissenting in part.

    By six votes in favor and one partially against, that:
  10. By virtue of the right to a healthy climate, States must protect the global climate system and prevent human rights violations derived from its alteration. Therefore, they must mitigate GHG emissions, which implies (i) adopting regulations on the matter that define a mitigation goal and a mitigation strategy based on human rights, as well as regulating the behavior of companies, in the terms of paragraphs 323 to 351; (ii) adopting mitigation supervision and control measures, in the terms of paragraphs 352 to 357, and (iii) determining the climate impact of projects and activities when appropriate, in the terms of paragraphs 358 to 363.
    Judge Patricia Pérez Goldberg dissenting in part.

    Unanimously, that:
  11. By virtue of the right to a healthy environment, States must (i) protect nature and its components from the impacts of climate change, and (ii) establish a strategy to move towards sustainable development, in the terms of paragraphs 364 to 376.

    By six votes in favor and one partially against, that:
  12. By virtue of the rights to life, personal integrity, health, private and family life, property and housing, freedom of residence and movement, water and food, work and social security, culture and education, as well as all other substantive rights threatened by climate impacts, States have an enforceability obligation, States have an immediately enforceable obligation to define and update, as ambitiously as possible, their national adaptation goal and plan, in the terms of paragraphs 384 to 391, as well as the duty to act with enhanced due diligence in compliance with the specific duties set forth in paragraphs 400 to 457.
    Judge Patricia Pérez Goldberg dissenting in part.

    Unanimously, that:
  13. By virtue of the democratic principle, the States must strengthen the democratic rule of law as an essential framework for the protection of human rights, the effectiveness of public action, and open and inclusive citizen participation, also ensuring the full exercise of procedural rights, in the terms of paragraphs 460 to 469.

    By six votes in favor and one partially against, that:
  14. By virtue of the human right to science and the recognition of local, traditional and indigenous knowledge, protected by Articles 26 of the Convention and 14.2 of the Protocol of San Salvador, all persons have the right to access the benefits of measures based on the best available science and on the recognition of local, traditional or indigenous knowledge, in the terms of paragraphs 471 to 487.
    Judge Patricia Pérez Goldberg dissenting in part.

    Unanimously, that:
  15. Under the right of access to information, States have obligations regarding (i) production of climate information, in the terms of paragraphs 501 to 518; (ii) disclosure of information relevant to the protection of human rights in the face of climate change, in the terms of paragraphs 519 to 523, and (iii) to adopt measures against disinformation, in the terms of paragraphs 524 to 527.

    Unanimously, that:
  16. Under the right to political participation, States must guarantee processes that ensure the meaningful participation of people under their jurisdiction in decision-making and policies related to climate change, as well as ensure prior consultation of indigenous and tribal peoples, where appropriate, in the terms of paragraphs 530 to 539.

    By four votes in favor and three partially against, that:
  17. By virtue of the right of access to justice, the States must ensure central aspects regarding (i) provision of sufficient means for the administration of justice in this context, (ii) application of the pro actione principle; (iii) celerity and reasonable time in judicial proceedings; (iv) adequate provisions regarding standing, (v) evidence and (vi) reparation, as well as (vii) application of inter-American standards; in the terms of paragraphs 542 to 560.
    Judge Nancy Hernández López, Judge Humberto Sierra Porto and Judge Patricia Pérez Goldberg dissenting in part.

    Unanimously, that:
  18. By virtue of the right to defend human rights, States have a special duty to protect environmental defenders that translates into specific obligations, among others, to protect them, investigate and, if necessary, punish attacks, threats or intimidations they suffer, and to counteract the “criminalization” of the defense of the environment, in the terms of paragraphs 566 to 567, and 575 to 587.

    Unanimously, that:
  19. States should adopt measures aimed at addressing the way in which the climate emergency exacerbates inequality and has a differentiated impact on people living in multidimensional poverty, in the terms of paragraphs 626 and 627.

    By four votes in favor and three partially against, that:
  20. States have specific obligations in situations of special vulnerability such as those faced by (i) children, and (ii) indigenous peoples, tribes, Afro-descendants, and peasant and fishing communities, (iii) people who suffer differentiated impacts in the context of climate disasters, in the terms of paragraphs 599 to 602, and 604; 606 to 613, and 614 to 618. Likewise, States must adopt measures to protect persons who do not belong to the traditionally protected categories but who are in a situation of vulnerability for dynamic or contextual reasons, in the terms of paragraphs 628 and 629.
    Judge Nancy Hernández López, Judge Humberto Sierra Porto and Judge Patricia Pérez Goldberg partially dissent.

Full text of the advisory opinion:

The English translation of the full text of the advisory opinion is available below.

Further information:

  • A summary of the advisory opinion (in Spanish) is available here.
  • A discussion of the advisory opinion by Patricia Tarre Moser and Juan Auz on Estudia Derechos Humanos (in Spanish) is available here.
  • The text of the advisory opinion request is available here (in the official Spanish version as filed with the Court) and it has also been translated to English, French and Portuguese by the Court’s Secretariat.
  • For a comment on the request by Juan Auz and Thalia Viveros-Uehara, see ‘Another Advisory Opinion on the Climate Emergency? The Added Value of the Inter-American Court of Human Rights’, EJIL:Talk! Blog, 2 March 2023, available here.
  • For a comment on the request from Maria Antonia Tigre, see ‘A Request for an Advisory Opinion at the Inter-American Court of Human Rights: Initial Reactions’, Climate Law Blog, 17 February 2023, available here.

Suggested citation:
Inter-American Court of Human Rights, Advisory Opinion on the Climate Emergency and Human Rights, OC 32/2025, 3 July 2025.

Last updated:
4 July 2025.

Categories
Business responsibility / corporate cases Children and young people Domestic court Emissions reductions/mitigation Evidence Right to a healthy environment Right to health South Africa

South African ‘Deadly Air Case’

Summary:
This case concerns toxic air pollution in the Mpumalanga Highveld, which is home to a dozen coal-fired power plants, a coal-to-liquids plant and a refinery. The case was brought by two environmental organisations – groundWork and Vukani Environmental Justice Movement in Action – represented by the Centre for Environmental Rights.

The applicants have petitioned the court to declare the unsafe levels of air pollution to be a violation of section 24a of the South African Constitution, which provides that “everyone has the right to an environment not harmful to their health or wellbeing”. 

The outcome of the case is currently pending before the Pretoria High Court, and Judge Colleen Collins has reserved judgment.

Claims:
The applicants’ complaints concern exposure to toxic chemicals emitted by the coal plants. This includes sulphur dioxide, heavy metals like mercury, and fine particulate matter. According to the applicants, the coal plants are responsible for the majority of these emissions, which are causing chronic respiratory illnesses such as asthma and lung cancer, and which also increase the risk of strokes, heart attacks, birth defects and premature deaths. 

The area in question has been recognized as a hotspot of pollution in excess of permissible levels. It has been claimed that this pollution is responsible for up to 10,000 excess deaths per year. But the Government has pointed to the existence of clean air regulations, and argued that there is no scientific evidence proving the link between the air pollution and the harms allegedly suffered by any particular individual. It has also highlighted the need to realize the right to a healthy environment progressively.

Amicus curia intervention by the UNSR:
David R. Boyd, the United Nations special rapporteur on human rights and the environment, intervened as an amicus curiae in this case. He argued that poor and marginalised people disproportionately carry the burden of toxic air pollution. It has been reported that Boyd’s arguments include consideration for the vulnerability of children to environmental threats.

Deciding body:
Pretoria High Court

Admissibility:
TBD

Merits:
TBD

Remedies and outcomes:
TBD

Further reading:
For more information from the Centre for Environmental Resources, click here.

Suggested citation:
South African ‘Deadly Air’ case, Pretoria High Court, hearings held on 17-19 May 2021.

Categories
2022 Adaptation Czechia Deforestation Domestic court Emissions reductions/mitigation European Convention on Human Rights Evidence Paris Agreement Private and family life Right to a healthy environment Right to health Right to life Right to property Separation of powers Standing/admissibility Victim status

Klimatická žaloba ČR and others v. Czechia

Summary:
This case was brought by a group of applicants, named in the brief as the climate action NGO Klimatická žaloba ČR, a municipality, two peasants, several foresters, and a man from Prague who suffers from environmental anxiety. The case was brought on 21 April 2021, and contested failures to provide adequate and necessary mitigation and adaptation measures to protect against the adverse effects of climate change. It alleged that the Government’s failures to adequately address climate change violated the rights to life, health, a healthy environment, and other rights guaranteed by the Czech constitution, the Czech Charter of Fundamental Rights and Freedoms, and the European Convention on Human Rights.

The applicants sought a declaration that the Czech government failed to respect their rights by ensuring sufficient emissions reductions to meet the Paris Agreement’s targets. They also sought an order setting the Czech carbon budget at 800 Mt CO2 from January 2021 until the end of the century.

In June 2022, the court of first instance issued a judgment that was partially favorable to the the applicants. However, in February 2023 the court of second instance annulled the first-instance judgment, referring the case back to the first-instance court. More details about the judgments follow below.

Judgment of 15 June 2022:
On 15 June 2022, the Municipal Court of Prague issued a (now overturned, see below) judgment in this case. It rejected the action against the Government of the Czech Republic. However, it found that the Ministry of the Environment, the Ministry of Industry and Trade, the Ministry of Agriculture and the Ministry of Transport had failed to provide specific mitigation measures leading to a 55% reduction in greenhouse gas emissions by 2030 compared to 1990 levels. These authorities were required to have a complete and precise plan of measures in place to meet this goal, which was not the case at the time of judgment; they were accordingly enjoined to cease their interference with the applicants’ rights by adopting an adequate mitigation plan.

Admissibility:
Citing the environmental case-law of the European Court of Human Rights, the court noted that inaction in protecting the environment may violate human rights, as well as the right to a favourable environment under Article 7 of the Czech Constitution and Article 35(1) of the Czech Charter of Fundamental Rights and Freedoms. It accordingly recognized the standing of the individual applicants in the case. Because domestic law grants associations the right to bring cases not only concerning their own rights, but also concerning those of their members, and because the court found that climate change affects the entire territory of the Czech Republic, the applicants associations had standing to bring an interference action. Likewise, the applicant municipality had standing, given that climate change can affect the legitimate interests of citizens living in its territory and that its basic duty “is to take care of the overall development of its territory and the needs of its citizens, and to protect the public interest. It is therefore desirable that a municipality should be able to take care of the rights of its citizens to a favourable environment in the same way as an environmental association”.

Reasoning on the merits:
In its (now-overturned) judgment, the court noted that the Czech Code of Administrative Justice does not allow an action for interference to protect the rights of third parties (actio popularis / public interest litigation), but found that the applicants’ affectedness in the present case was sufficiently direct, noting that “the link between climate change and human (in)action is so compelling and close that, when considering the directness of interference, the two are an inseparable whole.” It argued that the applicants had suffered a direct interference with their right to a favourable environment, given that the case was about climate change’s “local adverse manifestations” (para. 198). Citing the precautionary principle (para. 211) and IPCC reports (para. 216-220), the court went on to find that “living in sustainable climatic conditions [is] a prerequisite for the undisturbed exercise of other human rights, such as the right to life, health, property rights, the right to engage in economic activity” (para. 210). It recognized that climate change has adverse impacts on human living conditions, including through heat stress, the spread of infectious diseases, and reduced diversity and access to food (para. 221). Citing the Urgenda case, the court went on to find that climate change interfereed directly with the applicants’ right to a healthy environment (para. 224-225), and that “[r]esidence, age, sex, health, etc. only determine the extent of the interference” (para. 223).

The court found that while the Paris Agreement was part of the domestic legal order, and bound the Czech Republic, its 2 degree target was not legally binding. However, drawing on scholarship, the IPCC, and the Urgenda judgment, the court found that the obligation in Art. 4(2) of the Paris Agreement to implement mitigation measures to achieve the Czech nationally determined contribution (NDC) was binding on the State (para. 248-250). Although the Czech Republic had not in fact submitted its own NDC, the EU had set emissions levels for all Member States, and the resulting emissions reduction target was individually applicable to the Czech Republic (para. 251). Citing developments taking place as part of the EU’s Green Deal, it found that “the Defendants should have established a plan for achieving the Paris Agreement’s (EU NDC) 2030 target without undue delay” (para. 280). It noted too that “the Defendants have no reasonable reason to wait until 2023 to develop and then implement the measures.” Failing to fulfil the corresponding emissions reductions obligations, the court held, constituted a violation of the applicants’ rights.

The Municipal Court agreed with the applicants and the scientific studies, including IPCC reports, that they had submitted in evidence “that a global carbon budget of 900 GtCO2 since January 2018 is consistent with the Paris Agreement commitment” (para. 239). The court extensively engaged with the different evidentiary bases of the argument.

In terms of adaptation measures, the court found that the Defendants had not breached their obligation to adopt and implement adaptation measures under Article 5(4) of the European Climate Law. The Defendants had adopted an extensive action plan reflecting adaptation gaps, based on scientific knowledge, and involving a range of public and private actors (para. 329).

In a paragraph of central importance, and revolving around the “drop in the ocean” argument, the court held that:

“[C]limate change would also occur if the defendants acted to mitigate and adapt to climate change. However, if the defendants had properly fulfilled their obligations, climate change would have been milder and averting dangerous climate change under Article 2(1)(a) of the Paris Agreement would have been more likely. This conclusion follows from the non-negligible impact of human activity on climate change. Defendants’ failure to act is therefore a partial cause of the current adverse impacts of climate change. The Municipal Court notes that the individual responsibility of the States Parties to the Paris Agreement cannot be excluded by reference to the level of emission contributions of other States. Such an approach would make effective legal protection impossible where the State in question is not a significant emitter of greenhouse gases on a global scale and would be inconsistent with the principle of common but differentiated responsibility of the Parties under Article 2(2) of the Paris Agreement” (para. 325).

This quotation, and those throughout this post, come from the unofficial translation of the judgment provided by the applicants.

The court did not examine the complaints concerning the rights to property, to private and family life, to life and health, to carry out economic activity and to self-government.

Remedies:
The Court issued not only a declaratory but also a constitutive ruling, meaning that it instructed the authorities to remedy their inaction and adopt a mitigation plan that is sufficiently specific within the meaning of Article 4(2) and (14) Paris Agreement and aims at meeting the EU NDC target. The choice of specific mitigation measures leading to a 55% reduction in greenhouse gas emissions by 2030 compared to 1990 was left to the defendants’ discretion. The court held that it “could not, in view of the principle of separation of powers, order the defendants to develop specific mitigation measures” (para. 334). It did, however, reimburse the costs of the proceedings.

Judgment of 20 February 2023:
On 20 February 2023, the Supreme Administrative Court of the Czech Republic, examining an appeal on points of law by the Ministry of the Environment, annulled the decision of the Municipal Court of Prague and referred the case back to it. The decision to overturn was mainly based on the fact that the obligation to reduce GHG emissions by 55% is collectively shared by all Member States of the European Union, but a specific distribution of these obligations has not yet been establish by EU law or policy. The Supreme Administrative Court also found that the applicants had not sufficiently specified the areas in which the defendants had allegedly breached their obligations by inaction, therefore interfering with the rights of the applicants.

Date filed:
21 April 2021

More information:
The complaint is available here (in Czech).

An unofficial translation of the first-instance judgment into English and a press release are available from the applicants.

The second-instance judgment is available here (in Czech, through the Sabin Center for Climate Change Law’s Climate Case Chart database). A commentary of this decision by a lawyer member of Klimatická žaloba ČR is available here (in Czech).

Suggested citations:
Municipal Court of Prague, Klimatická žaloba ČR and others v. the Czech Republic and others, Judgment No. 14A 101/2021 of 15 June 2022.

Supreme Administrative Court of the Czech Republic, Klimatická žaloba ČR v Czech Republic [2023] 9 As 116/2022 – 166 of 20 February 2023.

Last updated:
15 June 2023