Environmental Law Commons^™

Opposition To Renewable Energy Facilities In The United States: September 2026 Edition, Romany M. Webb, Ivonne Norman

Sabin Center for Climate Change Law

For the first time in nearly 2 decades, the United States is seeing rapid growth in electricity demand, driven by the data center boom as well as expanding electrification. Total electricity use in the United States reached a record high of 4,430 terawatt hours (TWh) in 2025 — almost 3 percent above 2024 levels — and is expected to continue growing at a similar rate through 2050. Meeting this increased demand, while continuing to advance action on climate change, will require a massive ramp up in renewable energy development. Notable progress was made in 2025, with utility-scale solar generation in …

Rebutting 38 False Claims About Solar, Wind, Electric Vehicles, And Battery Storage, Andrew Kieffer

Sabin Center for Climate Change Law

Achieving the United States’ ambitious emissions reduction goals depends in large part on the rapid adoption of wind and solar energy and the electrification of consumer vehicles. However, misinformation and coordinated disinformation about renewable energy is widespread and threatens to undermine the transition. In this report, the Sabin Center identifies and examines 38 of the most pervasive false claims about solar energy, wind energy, and electric vehicles, with the aim of promoting a more informed discussion.

Sabin Center For Climate Change Law Annual Report 2025-2026, Tiffany Challe

Sabin Center for Climate Change Law

Over the past year, the Sabin Center continued to translate complex legal and scientific questions into practical tools that advance climate action and climate justice across climate litigation, renewable energy, local climate action, model climate laws, carbon management and greenhouse gas removal, climate law and science, and climate and business law.

Explore our 2025–2026 Annual Report to see the research, engagement, and impact behind the numbers — and what’s ahead.

Data Centers Face Volatile Regulatory Landscape, Michael B. Gerrard

Sabin Center for Climate Change Law

The construction of new data centers for artificial intelligence has become a major engine of the U.S. economy. More than 700 data centers are now under construction across 40 states, with many more to come.

These are typically multi-billion-dollar projects. This boom is facing growing public opposition, which has led to an extremely volatile regulatory land-scape, especially at the state and local levels. That landscape is the subject of this article. This volatility has raised the cost of capital for data centers and led to the cancellation of many, and to heightened due diligence by lenders and others.

Summary Report: Second Conference On Attribution Science And Climate Law, Jessica A. Wentz

Sabin Center for Climate Change Law

The Sabin Center for Climate Change Law and the Columbia Climate School hosted the Second Conference on Attribution Science and Climate Law at Columbia University on June 10–11, 2026. This event brought together an interdisciplinary group of researchers and practitioners to discuss recent developments in attribution science and the field’s relevance to climate law and policy. Participants included physical scientists, public health researchers, economists, social scientists, legal scholars, advocates, and policy experts. This report provides a written summary of the conference proceedings.

From Chainsaws To Courtrooms: Corporate Climate Litigation And Deforestation In Brazil, Maria Antonia Tigre, Mariana Barbosa Cirne

Sabin Center for Climate Change Law

Corporate climate litigation has emerged as one of the most dynamic and high profile tools for addressing the private sector’s role in the climate crisis. While much of the scholarship and public debate has centered on cases in the United States and Europe, litigation targeting corporations in the Global South — particularly Brazil — has grown rapidly, both in volume and significance. Brazil now ranks among the world’s top jurisdictions for corporate climate damage claims. These suits have pioneered methods for quantifying climate damages, often from illegal deforestation, and have tested the reach of the civil liability regime in novel …

The Impact Of New York's 2026 Climate Law Retreat, Jonathan A. Binder, Vincent M. Nolette

Sabin Center for Climate Change Law

On May 26, 2026, New York State enacted significant revisions to its 2019 Climate Leadership and Community Protection Act (CLCPA). The 2026 Amendments, which include changes to the greenhouse gas (GHG) emission accounting methodology, the statewide GHG emission limits, and the requirement to adopt implementing regulations, collectively weaken the Act's ambition. New York’s retreat from state climate action after championing it for years reflects a broader national trend of de-prioritizing mitigation efforts.

The 2026 Amendments will have vast and important consequences for the implementation of the CLCPA. Numerous actions will need to be updated through rulemaking, guidance, or other administrative …

Stafford Act's Requirement To Consider Climate Change In State Hazard Mitigation Plans, Olivia N. Guarna

Sabin Center for Climate Change Law

Climate change is fueling an unprecedented number of extreme weather and climate disasters with dire costs on human life and property. States and local governments now face a responsibility to adapt to these increasing disaster risks to improve community resilience and avoid an ever-growing magnitude of loss. Congress passed the Stafford Act in 1988 to provide a means for sustained and coordinated federal aid in response to disasters. The Stafford Act includes a comprehensive non-emergency hazard mitigation program. Hazard mitigation assistance empowers states, tribes, and local governments to engage in planning and mitigation activities that improve disaster outcomes and minimize …

The Legal Framework For Direct Ocean Carbon Capture And Storage (Volume 2: The United States), Korey Silverman-Roati, Romany M. Webb

Sabin Center for Climate Change Law

This paper, the second in a series of two, focuses on the U.S. legal framework for the marine carbon dioxide removal (mCDR) approach of direct ocean carbon capture and storage (DOCCS). The first explores DOCCS governance under international law and is available here: https://scholarship.law.columbia.edu/sabin_climate_change/271/.

DOCCS aims to remove some of the carbon currently stored in the ocean and thereby enable it to uptake additional carbon dioxide from the atmosphere. DOCCS is still undergoing research, but early studies suggest it could have significant carbon dioxide removal potential. However, DOCCS could also present environmental and other risks, including from the construction …

From Tech To Table: Moving Sustainable Proteins Beyond Marketplace Bottlenecks, Andy Fitch, Cynthia Hanawalt

Sabin Center for Climate Change Law

Climate advocates may hope to see dramatic commercial breakthroughs over the next several decades that reshape emissions-intensive components of our everyday lives, such as our dietary choices, household energy use, and transportation habits. Yet transforming these consumer sectors will require not only scientific ingenuity and entrepreneurial ambition, but also nimble competition policy to address complex market dynamics.

Sustainable food production likely necessitates substantial departure from traditional livestock-management practices. Agricultural production currently generates about one-third of global greenhouse gas emissions (“GHGs”). Animal livestock account for the largest share, while occupying roughly 40% of the Earth’s habitable land, much of which could …

The Legal Framework For Direct Ocean Carbon Capture And Storage (Volume 1: International Law), Romany M. Webb, Korey Silverman-Roati

Sabin Center for Climate Change Law

This paper focuses on the marine carbon dioxide removal (mCDR) approach of direct ocean carbon capture and storage (DOCCS), which aims to remove some of the carbon currently stored in the ocean and thereby enable it to uptake additional carbon dioxide from the atmosphere. DOCCS is still undergoing research, but early studies suggest it could have significant carbon dioxide removal potential. However, DOCCS could also present environmental and other risks, including from the construction of new facilities, the intake and processing of water, and the handling and storage of carbon dioxide. Careful siting, design, and operation of DOCCS systems is …

A Primer On International Agreements Relevant To Marine Carbon Dioxide Removal, Korey Silverman-Roati, Romany M. Webb

Sabin Center for Climate Change Law

This primer provides an introduction to seven international agreements relevant to marine carbon dioxide removal (mCDR) research activities in the ocean. Each of these agreements has implications for whether, when, where, and how in-ocean mCDR projects will go forward. The primer is intended to provide policymakers, non-government organizations (NGOs), scientists, and others working on mCDR with an introduction to the agreements and explain their relevance to mCDR. It also offers guidance to those wishing to engage in discussions regarding mCDR under the agreements, which could help resolve open legal questions on their applicability to, and governance of, mCDR.

Regulation Of Coastal Weathering In Massachusetts, Ashwin Murthy, Korey Silverman-Roati, Romany M. Webb

Sabin Center for Climate Change Law

Carbon dioxide removal (“CDR”) will be needed, alongside emissions reductions, to achieve global climate objectives. One such technique is coastal enhanced weathering (“CEW”), which looks to accelerate the natural processes of weathering of alkaline-rich rocks to remove and sequester carbon dioxide from the atmosphere. This natural weathering process occurs slowly — over centuries to millennia — but scientists have suggested the possibility of speeding it up by finely grinding alkaline rocks and spreading them in the coastal zone, where the natural wave and tidal forces will catalyze weathering. As the alkaline rocks weather, they convert carbonic acid present in the …

International Governance Of Ocean Iron Fertilization Research: A Case Study Of The Proposed Exploring Ocean Iron Solutions Field Experiments, Ashwin Murthy, Romany M. Webb

Sabin Center for Climate Change Law

Ocean iron fertilization (OIF) has been a subject of scientific research since the 1980s. The primary international legal instruments regulating OIF are the 1972 Convention on the Prevention of Marine Pollution by Dumping of Wastes and Other Matter (London Convention or LC) and the 1996 Protocol to that Convention (London Protocol or LP). To guide regulation of research activities, under the LC and LP, the Assessment Framework was developed.

To demonstrate how domestic regulators might use the Assessment Framework, this paper explores its application to recently proposed OIF field trials advanced by the Exploring Ocean Iron Solutions (ExOIS) research consortium. …

Climate Preemption And Fossil Fuel Entrenchment, Vincent M. Nolette

Sabin Center for Climate Change Law

Mitigating the worst impacts of climate change demands a rapid reduction in greenhouse gas emissions and a transition to renewable, low-carbon sources of energy. This requires building thousands of gigawatts of clean energy at an unprecedented rate and expeditiously retiring existing fossil fuel infrastructure. Yet both parts of this task have been obstructed by state legislative efforts over the last decade — particularly in Republican-led states — to block local governments from reducing greenhouse gas emissions while legally mandating continued fossil fuel reliance. These efforts are accomplished through state climate preemption laws. Framed in neutral or positive terms like “energy …

Navigating State Law In Local Climate Action, Vincent M. Nolette, Daniel J. Metzger, Olivia N. Guarna, Amy E. Turner

Sabin Center for Climate Change Law

Local governments are well-positioned to lead the fight against climate change by reducing community-wide greenhouse gas emissions, promoting renewable energy resources, and otherwise advancing climate mitigation and adaptation goals. Many local governments have already taken actions, and there is more they can do. In mitigating and adapting to the climate crisis, local governments must be aware of and act consistently with preemptive state laws that limit their authority. This report provides state-by-state information, resources, and analysis for nineteen states on key state-local preemption issues.

The states covered in this report represent several of the “swing” states that are the most …

Climate Science And Natural Resource Litigation, Jessica A. Wentz

Sabin Center for Climate Change Law

Climate change has major implications for sustainable use and conservation of natural resources. Many natural systems are already under severe stress and may be unable to sustain historical use patterns; resource management decisions can also exacerbate or mitigate climate change by affecting the balance of greenhouse gases in the atmosphere. This Article describes the legal and scientific basis for recognizing agencies’ obligations to assess and respond to climate change, drawing insights from a survey of U.S. litigation involving forests, fisheries, rangelands, and freshwater resources. The cases suggest litigants have been somewhat successful in driving more rigorous assessments of climate change. …

The Disaster Management Complex: Law’S Adaptations In Times Of Climate Disaster, Michael Burger, Jeffrey Schlegelmilch, Lucia Bragg

Sabin Center for Climate Change Law

The Anthropocene is marked by constant climate-related disasters and defined by the urgent need to foster and implement adaptations to future climate impacts that reduce disaster risk. The intensity, frequency, and severity of extreme weather events continue to rise even as nations and corporations alike miss their emissions targets, all promising a hotter, wetter, and more extreme future. A number of federal agencies, including the Federal Emergency Management Agency (FEMA), have, at times, sought to adapt their own famously fragmented responses to these changing circumstances. However, federal disaster response is conducted against a backdrop of authorizing legislation that is designed …

Climate Change In The Courts: A 2025 Retrospective, Maria Antonia Tigre, Margaret Barry

Sabin Center for Climate Change Law

Drawing from cases collected in the Sabin Center’s Climate Litigation Database, this report offers insights into global climate litigation developments during 2025. This third installment in our year-end series provides a snapshot of how the field of climate litigation evolved over the course of the year. The report revisits significant rulings from around the world and connects them to eight illustrative themes: (1) climate change in international courts and tribunals; (2) environmental assessment and permitting; (3) non-compliance with climate commitments; (4) constitutional and human rights; (5) greenwashing and climate-washing; (6) corporate accountability cases; (7) standing; and (8) deregulatory suits.

The Icj’S Advisory Opinion On Climate Change, Maria Antonia Tigre, Maxim Bönnemann, Antoine De Spiegeleir

Sabin Center for Climate Change Law

This open-access edited volume offers the first comprehensive analysis of the International Court of Justice’s 2025 Advisory Opinion on the obligations of States in respect of climate change, one of the most consequential developments in international climate law since the adoption of the Paris Agreement. Bringing together leading scholars and practitioners from across public international law, human rights law, environmental law, and global governance, the book examines how the Court reframed climate change as a matter of binding legal obligation rather than political discretion.

The contributions explore the Opinion’s articulation of state duties under treaties, customary international law, and general …

The Legal Framework For Enhanced Rock Weathering In Minnesota, Ashwin Murthy, Korey Silverman-Roati, Romany M. Webb

Sabin Center for Climate Change Law

This paper focuses on one form of carbon dioxide removal, terrestrial enhanced rock weathering, which involves spreading finely ground alkaline rocks over land. Scientists posit that the alkaline materials will bond with carbon dioxide in the air, sequestering it in mineral form, potentially for tens of thousands of years. Within the U.S., Minnesota is thought to be an ideal location for enhanced rock weathering, as it has pre-existing silicate rock reserves and quarrying infrastructure, and appropriate land. However, before enhanced rock weathering can be deployed at scale, further research is required to verify its effectiveness, co-benefits, and risks.

Currently in …

U.S. Climate Litigation During The Biden Years, Margaret Barry

Sabin Center for Climate Change Law

Using cases collected in the Sabin Center for Climate Change Law’s Climate Litigation Database, this report analyzes the 630 climate change lawsuits filed in United States courts while President Joseph R. Biden was in office. During the Biden administration, the federal government reversed course on the first Trump administration’s climate deregulation and embarked on a “whole-of-government approach to combatting the climate crisis.” Many states and municipalities pursued their own efforts to mitigate and prepare for climate change, while other states undertook climate deregulatory efforts. During the four years of the Biden administration, many areas of the U.S. experienced disasters linked …

Legal Models For Public-Private City Greening Partnerships, Daniel J. Metzger

Sabin Center for Climate Change Law

Cities are significantly hotter than their surrounding areas. That difference, known as the “urban heat island” effect, is driven in significant part by the dark-colored buildings, sidewalks, roadways, and similar surfaces that dominate urban spaces, absorbing solar energy and later radiating it outward as thermal energy that heats the nearby air. This Comment suggests and describes one avenue through which cities and local community-based organizations (CBOs) could tackle extreme heat: partnering with one another to transform paved surfaces into green or reflective ones. Partnerships of this kind could combine the resources and desire to create green spaces that nongovernmental groups …

“Small” Voices, Big Wins: Analyzing Remedies In Children’S Climate Cases, Maria Antonia Tigre

Sabin Center for Climate Change Law

Children’s climate litigation has emerged as a powerful tool to address the climate crisis, with young plaintiffs around the world taking governments and corporations to court to demand climate action. This Article examines successful cases — those in which relief sought by the applicants was fully or partially granted — across five continents, providing an “around the world” perspective on the evolution and impact of youth-led climate litigation. Focusing on landmark cases in Australia, Colombia, South Africa, South Korea, and the United States, this analysis highlights the arguments presented by young plaintiffs and the judicial reasoning that supported the relief …

The Behavioral Effects Of Corporate Ghg Emissions Disclosures, Cynthia Hanawalt, Andy Fitch

Sabin Center for Climate Change Law

In recent years, roughly 30 nations have implemented regulatory regimes that mandate some type of greenhouse gas (GHG) emissions disclosure from corporations. As GHG emissions disclosure regimes continue to take hold, several key questions arise: will they prompt meaningful and sustained reductions, or will they merely serve to document corporations’ unabated emissions? And if these regimes do lead to lasting emissions reductions, precisely what causes the changes in companies’ behavior? These questions are particularly relevant as climate advocates grapple with the merits of disclosure as a tool for real emissions impact, and as policymakers refine disclosure requirements to best fit …

Climate Litigation Report 2025 — Climate Change In The Courtroom: Trends, Impacts And Emerging Lessons, Maria Antonia Tigre, Margaret Barry

Sabin Center for Climate Change Law

The Climate Litigation Report 2025 updates previous United Nations Environment Programme reports published in 2017, 2020, and 2023. It provides judges, lawyers, advocates, policy makers, researchers, environmental defenders (including child and women defenders), NGOs, businesses, and the international community with an essential resource to understand the current state of global climate litigation. The report includes descriptions of the key trends in climate litigation and the most important issues that courts have faced in the course of climate change cases.

International Legal Guidelines For Marine Carbon Dioxide Removal Governance Under The London Convention And London Protocol, Korey Silverman-Roati, Romany M. Webb

Sabin Center for Climate Change Law

For the past two decades, parties to the London Convention and Protocol have negotiated rules, decisions, and amendments related to climate change. These efforts have principally focused on two sets of technologies – sub-seabed carbon dioxide storage and marine geoengineering. Initial discussions regarding marine geoengineering focused specifically on ocean fertilization but, more recently, the parties have considered an expanded array of marine carbon dioxide removal (mCDR) approaches, including ocean alkalinity enhancement and ocean sinking of biomass. Throughout these discussions, the parties have invoked legal principles and guidelines, like the precautionary approach, to inform their assessment of how to apply the …

Methane Removal Under The Paris Agreement, Romany M. Webb

Sabin Center for Climate Change Law

In the 2015 Paris Agreement, the international community agreed to “strengthen the global response to climate change” by limiting the “increase in global average temperatures to well below" 2 degrees Celsius above pre-industrial levels, and ideally to 1.5 degrees Celsius. As recognized in the Agreement, to stay within these limits, global greenhouse gas emissions must be rapidly reduced, “so as to achieve a balance between anthropogenic emissions by sources and removals by sinks of greenhouse gases in the second half of this century” — a situation commonly described as “net zero.” The need to reach net zero has prompted growing …

Varied Legal Parameters Shape Fiduciaries’ Ability To Act On Climate Risk, Cynthia Hanawalt, Andy Fitch

Sabin Center for Climate Change Law

Commentators who advocate either for or against corporate and asset managers addressing climate risks often refer to “fiduciary duty” as justification for their claims. Yet no field of corporate or asset management actually imposes one standalone fiduciary duty. Nor do any two business-law fields impose the same fiduciary regime. Instead, these fields adopt differing arrays of fiduciary duties to address various types of relationships, comprising a different blend of affirmative obligations and/or prohibitions, assessed with different degrees of strictness by enforcers and courts. As a result, overgeneralizations about fiduciaries’ duty in all business-law contexts tend to further obscure what a …

Sabin Center For Climate Change Law Annual Report 2024-2025, Tiffany Challe

Sabin Center for Climate Change Law

This 2024-2025 annual report highlights the Sabin Center’s breadth and impact across our program areas, including climate litigation, carbon management and negative emissions technologies, US climate policy, energy transition, climate law and finance.