Mario Atencio, a proud member of the Diné (Navajo) Nation, vividly recalls the tranquil beauty of his grandmother’s home in Counselor, New Mexico, a place where a simple, traditional Navajo lifestyle thrived amidst lush green properties teeming with animals. This idyllic childhood memory, however, began to fade in 2015 as the rumble and roar of oil and gas fracking operations encroached upon the sacred and ecologically sensitive Greater Chaco Landscape in the state’s northwest corner. What was once a peaceful sanctuary transformed into a cacophony of industrial noise and a haze of air pollution, fundamentally altering the fabric of life for his family and community. The environmental degradation reached a critical point in 2019, when devastating spills released thousands of gallons of oil, contaminating both the land and the vital water sources beneath it. The once-abundant medicinal herbs and traditional plants that were integral to Diné culture withered away, and the region’s rare birds and wildlife, once common sights, began to disappear, leaving a stark void in their wake.

Two years ago, Atencio stepped forward as the lead plaintiff in Atencio v. State of New Mexico, a pivotal climate litigation case that is now poised to make history. The lawsuit meticulously accuses the New Mexico Legislature and several state agencies of actively contributing to the harm inflicted upon Indigenous communities and of failing to uphold their constitutional mandate to prevent harmful pollution. Atencio articulates a profound violation of fundamental rights, stating, "The rights that we have as Indigenous people to free, informed, prior consent are being violated. We’ve never had people from the government come and say, ‘This is what’s going to happen to your land and water.’" This assertion underscores a broader struggle for environmental justice and self-determination for Indigenous populations globally, often disproportionately affected by extractive industries without adequate consultation or consent.

After navigating the complexities of the lower courts, the case has now ascended to the New Mexico Supreme Court, which agreed this month to hear the arguments, marking a significant milestone. Should the court rule in Atencio’s favor, this decision would join a growing roster of high-profile climate litigation victories, such as Held v. Montana. That landmark case, brought by young plaintiffs, successfully argued that Montana violated their constitutional right to a healthy environment by not adequately regulating greenhouse gas emissions. Similarly, last year saw young, Indigenous climate advocates in Hawai’i secure a groundbreaking settlement against the state’s Department of Transportation. They challenged the agency’s continued support for highway expansion projects, which contradicted the state’s own directive to decarbonize its transportation sector by 2045, highlighting the increasing judicial scrutiny on governmental actions (or inactions) that undermine climate goals.

These successes, while encouraging, are part of a broader, often challenging, landscape of climate litigation unfolding across the United States and worldwide. Margaret Barry, who meticulously tracks these legal battles at Columbia University’s Sabin Center for Climate Change Law, notes that similar cases have been filed in nearly every state, yielding a handful of crucial victories over the past decade. The efficacy of these cases often hinges on the specific language of state constitutions. Many state charters, unlike the U.S. Constitution, explicitly or implicitly include a proactive duty for the government to protect residents’ environmental rights. However, the strength and interpretation of these protections vary significantly. In Alaska, for instance, the case of Sagoonick v. State of Alaska saw a group of young people attempt to halt a liquified natural gas project, arguing that the state Constitution’s protection of natural resources for the general public implicitly required a livable climate. The Alaska Supreme Court, in March, ultimately disagreed with this expansive interpretation, illustrating the jurisdictional nuances and legal hurdles involved in such cases.

New Mexico stands out due to a powerful constitutional provision adopted by voters in 1971. This amendment explicitly directs the state government to "provide for control of pollution and control of despoilment of the air, water and other natural resources," as highlighted by Gail Evans, the Center for Biological Diversity attorney leading Atencio’s case. Atencio v. State of New Mexico directly invokes this provision, asserting that the state has fundamentally failed to fulfill these explicit responsibilities. Evans draws a compelling parallel to New Mexico’s constitutional duty to adequately fund and support public education, where the state provides resources for teachers and develops comprehensive guidelines. In stark contrast, when it comes to regulating oil and gas pollution, she contends that New Mexico has "just utterly failed" to equip itself with the necessary tools and resources to safeguard public and environmental health. The lawsuit alleges that lax enforcement mechanisms, coupled with a labyrinth of legal loopholes, allow the fossil fuel industry to operate with minimal accountability for the pollution it generates.

Empirical data reinforces these claims. According to the environmental watchdog group Earthworks, the New Mexico Environment Department employed a mere two full-time inspectors in 2023 to investigate complaints across all 56,000 oil and gas facilities within the state. This staggering disparity effectively leaves the industry largely to self-report its emissions of harmful air pollutants and potent greenhouse gases, raising serious questions about the veracity and completeness of environmental monitoring. The lawsuit further highlights this systemic oversight through the experience of another Diné plaintiff, Kendra Pinto, who personally documented a significant methane leak near her home, even after the Environment Department had previously assured her that no leaks were found. This incident underscores the profound distrust and frustration within affected communities regarding the state’s oversight capabilities.

"You can get a permit to frack simply for asking," Evans states, pointing to a regulatory environment where the state reportedly conducts minimal, if any, environmental or public health overview or consideration before granting such permits. This permissive approach has severe consequences, particularly in the Permian Basin, one of the world’s most prolific oil and gas regions, which spans parts of New Mexico and Texas. Despite ambient air quality readings in the Permian Basin frequently exceeding federal health standards, new wells continue to be permitted, exacerbating pollution levels and posing ongoing health risks to residents. The cumulative impact of these operations, from the release of volatile organic compounds and methane to the generation of wastewater and hazardous materials, contributes to respiratory illnesses, neurological problems, and other chronic health conditions, particularly among communities situated near drilling sites.

The potential ramifications of Atencio v. State of New Mexico are immense. A favorable ruling could compel New Mexico, currently the country’s second-largest fossil fuel producer, to fundamentally reform its regulatory framework and significantly curtail its environmental footprint. However, leveraging similar legal victories at the federal level remains a considerable challenge, as Margaret Barry notes. The U.S. Constitution, unlike many state constitutions, is primarily designed to limit governmental power and protect civil liberties, such as free speech, rather than proactively grant broad environmental rights. This foundational difference often makes federal climate litigation more complex. Illustrating this difficulty, a federal judge in Montana in October dismissed Lighthiser v. Trump. This case sought to expand protections won at the state level in Held v. Montana, with 22 plaintiffs arguing that the Trump administration’s executive orders rolling back climate protections and boosting fossil fuel production violated their constitutional right to a stable and healthy climate. While the judge acknowledged the plaintiffs’ demonstrable harm from climate change, the court ultimately ruled that federal courts lacked the authority to compel the government to alter its policy course, highlighting the institutional constraints on federal judicial intervention in climate policy.

If the New Mexico Supreme Court rules in his favor, Atencio hopes the state will be legally compelled to meticulously document the adverse effects of oil and gas pollution on the health of Indigenous communities and the integrity of their sacred lands. This documentation, he envisions, would then serve as the foundation for concrete, protective actions. Such measures could include implementing a moratorium on new oil and gas development until emissions are demonstrably reduced, closing critical legal loopholes that currently enable unchecked pollution, substantially increasing funding for environmental enforcement agencies, and establishing significantly larger buffer zones between drilling sites and sensitive areas like homes, schools, and cultural sites.

The industry often counters these demands with claims that such stringent regulations would render them unable to operate. "What’s so shocking to me is that the industry will come forward and say, ‘If you do what the plaintiffs are asking for, you’ll put us out of business,’" Evans observes, challenging the premise. "So you can’t operate in a way that doesn’t harm people’s health and environment? Because that’s what we’re asking for." This statement encapsulates the core tension at the heart of this and many environmental justice cases: the perceived conflict between economic activity and the fundamental right to a healthy, livable environment. The outcome of Atencio v. State of New Mexico will not only shape environmental policy in New Mexico but also resonate across the nation, offering a potential blueprint for other states grappling with the profound challenge of balancing energy production with constitutional environmental duties and the rights of their most vulnerable communities.