Digital Commons Network^™

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.

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 …

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 …

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 …

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.

Decommissioning Offshore Oil And Gas Infrastructure: Report Of Proceedings, May 2, 2025 Offshore Decommissioning Workshop, Martin Lockman, Ashwin Murthy, Romany M. Webb

Sabin Center for Climate Change Law

On May 2, 2025, Ocean Conservancy and the Sabin Center for Climate Change Law organized a workshop at Columbia Law School on offshore oil and gas decommissioning in the United States. The overarching goal of the workshop was to bring together offshore law and policy experts to outline a research and policy agenda for offshore decommissioning. Within this broad goal, we sought to (1) identify key opportunities to reform offshore decommissioning law in the United States, both in the short term and over the next decade, (2) identify knowledge gaps and highlight areas for future research, and (3) begin to …

The Role Of Advisory Opinions In International Law In The Context Of The Climate Crisis, Maria Antonia Tigre, Armando Rocha

Sabin Center for Climate Change Law

Between December 2022 and March 2023, three requests for an advisory opinion were submitted to the International Tribunal for the Law of the Sea (ITLOS), the Inter-American Court of Human Rights (IACtHR), and the International Court of Justice (ICJ). Furthermore, a request for an advisory opinion from the African Court on Human and Peoples’ Rights (AfCtHPR) is being prepared. As such, 2024–2025 marks an unprecedented moment in global climate litigation: as of November 2024, we are on the verge of having four of the world’s most important international and regional courts and tribunals answering crucial legal questions on the (ex …

Regulation Of Ocean Alkalinity Enhancement In Washington State, Ashwin Murthy, Korey Silverman-Roati, Romany M. Webb

Sabin Center for Climate Change Law

This paper focuses on one commonly-discussed ocean carbon dioxide removal approach, ocean alkalinity enhancement (“OAE”), which involves adding alkaline substances to ocean waters in order to increase their ability to uptake carbon dioxide from the atmosphere. OAE also has the potential to mitigate ocean acidification, which has been worsening globally due to climate change, and has threatened marine life and industries in places like Washington State.

There is significant interest in pursuing OAE off the coast of Washington state. This paper examines the legal framework for OAE projects in Washington State. As we explain, OAE projects conducted in near-shore areas …

Permit Proposals: Summary Of Recommendations, Luis Pablo Alvarez

Sabin Center for Climate Change Law

All scenarios for meeting greenhouse gas reduction targets require faster deployment of renewable energy projects. However, the current permitting processes, while designed to ensure environmental and public safety as well as public participation, often delay progress. The challenge is to speed up renewable energy development without compromising environmental and community protections. This white paper by the Sabin Center reviews 15 reports from reputable institutions that identify steps to streamline the permitting process. These recommendations offer strategies to reduce time and costs in advancing renewable energy projects.

This report will be updated from time to time. Readers who identify errors in …

The Private Litigation Impact Of New York’S Green Amendment, Evan Bianchi, Sean Di Luccio, Martin Lockman, Vincent Nolette

Sabin Center for Climate Change Law

The increasing urgency of climate change, combined with federal environmental inaction under the Trump Administration, inspired a wave of environmental action at the state and local level. Building on the environmental movement of the 1970s, activists have pushed to amend more than a dozen state constitutions to include “green amendments” — self-executing individual rights to a clean environment. In 2022, New York activists succeeded, and New York’s Green Amendment (the NYGA) now provides that “Each person shall have a right to clean air and water, and a healthful environment.”

However, the power of the NYGA and similar green amendments turns …

Climate Change And Human Health: A Synthesis Of Scientific Research And State Obligations Under International Law, Jessica A. Wentz

Sabin Center for Climate Change Law

This report synthesizes the latest scientific research on the human health effects of climate change and discusses the legal implications of this research, specifically with regards to State obligations under international law. In doing so, the report seeks to provide insights on issues to be analyzed by the International Court of Justice (ICJ) in its upcoming advisory opinion on the legal obligations of States with respect to climate change. It also seeks to enhance the capacity of judges, advocates, and governments to understand these issues in the context of current and future proceedings involving international law obligations related to climate …

Executive Actions To Ensure Safe And Responsible Ocean Carbon Dioxide Removal Research In The United States, Romany M. Webb, Korey Silverman-Roati

Sabin Center for Climate Change Law

This paper presents recommended actions that federal agencies could take, under existing law, to ensure safe and responsible permitting and regulation of ocean carbon dioxide removal (CDR) research in U.S. waters. Controlled field trials and other in-ocean research is critical to improve scientific and societal understanding of ocean CDR techniques that could help the U.S. reach its climate goals. That could raise a host of legal issues, however. Existing legal frameworks were not designed to regulate ocean CDR, and federal agencies have yet to fully explain how decades-old environmental laws will be applied to a new set of activities. This …

Advisory Opinion On Climate Change: Summary Of Written Observations Submitted To The Inter-American Court Of Human Rights (Part 1), Maria Antonia Tigre

Sabin Center for Climate Change Law

On January 9, 2023, the Foreign Ministers of Chile and Colombia requested an advisory opinion from the Inter-American Court of Human Rights (IACtHR) on the scope of state obligations for responding to the climate emergency under the frame of international human rights law and, specifically, under the American Convention on Human Rights. Within this context, the IACtHR received a total of 255 amicus brief submissions.

This report includes summaries of the amicus briefs submitted to the Court. Due to the number of submissions received and the short timeframe prior to the hearings, the report is divided into parts. This first …

Sabin Center For Climate Change Law Annual Report 2023, Sabin Center For Climate Change Law

Sabin Center for Climate Change Law

This year the Sabin Center for Climate Change introduces its first annual report, which highlights and synthesizes our cutting-edge research and innovative engagements in 2023.

The Legal Case For Equity In Local Climate Action Planning, Amy E. Turner

Sabin Center for Climate Change Law

Over the last half decade, local climate action plans have regularly come to incorporate considerations of racial and socioeconomic equity, recognizing the ways in which low-income communities and communities of color experience earlier and worse consequences from global warming, and these communities are also at risk of being harmed by policies meant to address climate change. Until now, however, the discourse on equity in climate action planning has largely pertained to policy; it acknowledges the disproportionate harm that certain communities experience as a result of climate change and policies to address climate change, and suggests policy tools that can address …

Permitting Co2 Pipelines, Martin Lockman

Sabin Center for Climate Change Law

Both emissions reductions and removal of greenhouse gases like carbon dioxide (CO2) from the atmosphere are essential if we hope to minimize the damage caused by climate change and globally reduce our net emissions of greenhouse gasses to zero. Some CO2 removal techniques, like “direct air capture” that uses chemical and electrochemical processes to capture atmospheric CO2 at relatively low concentrations, generate a stream of captured CO2 that is then injected into underground rock formations referred to as “geologic storage.” CO2 pipelines represent the most efficient way to transport high volumes of captured CO2 to geologic storage locations. However, while …

Global Climate Litigation Report: 2023 Status Review, Michael Burger, Maria Antonia Tigre

Sabin Center for Climate Change Law

This Global Climate Litigation Report: 2023 Status Review, which updates previous United Nations Environment Programme reports published in 2017 and 2020, provides an overview of the current state of climate change litigation and an update of global climate change litigation trends. It provides judges, lawyers, advocates, policymakers, researchers, environmental defenders, climate activists, human rights activists (including women’s rights activists), NGOs, businesses and the international community with an essential resource to understand the current state of global climate litigation, including descriptions of the key issues that courts have faced in the course of climate change cases.

Opposition To Renewable Energy Facilities In The United States: May 2023 Edition, Matthew Eisenson

Sabin Center for Climate Change Law

Achieving lower carbon emissions in the United States will require developing a very large number of wind, solar, and other renewable energy facilities, as well as associated storage, distribution, and transmission, at an unprecedented scale and pace. Although host community members are often enthusiastic about the economic and environmental benefits of renewable energy facilities, local opposition often arises. This report updates and considerably expands two previous Sabin Center reports, published in September 2021 and March 2022, and documents local and state restrictions against, and opposition to, siting renewable energy projects for the period from 1995 to May 2023. Importantly, the …

Human Rights And Climate Change For Climate Litigation In Brazil And Beyond: An Analysis Of The Climate Fund Decision, Maria Antonia Tigre, Joana Setzer

Sabin Center for Climate Change Law

In 2022, the Brazilian Supreme Court announced a groundbreaking decision in the Climate Fund case. The decision, rendered amidst a challenging political climate, acknowledges the significance of the Paris Agreement within the country’s legal framework. The Court’s ruling established that the executive branch has a constitutional obligation to allocate funds from the Climate Fund for climate change mitigation and adaptation, grounded in the constitutional right to a healthy environment, international rights and commitments, and the principle of separation of powers.

Notably, the Court recognized the Paris Agreement as a human rights treaty, granting it “supranational” status. The implications of the …

Climate Change And Indigenous Groups: The Rise Of Indigenous Voices In Climate Litigation, Maria Antonia Tigre

Sabin Center for Climate Change Law

Climate change’s pervasive human rights impacts on populations worldwide are widespread and now widely known. One avenue to address these human rights impacts is the growth of rights-based climate litigation. There are now hundreds of cases worldwide grounded on human rights claims. However, less attention has been brought to how vulnerable groups are disproportionally affected by climate change. Indigenous groups, in particular, are disproportionately affected by climate change due to their connection to their land and dependence on their ecosystems. To increase global attention and seek legal remedies to address how Indigenous communities are impacted by climate change, Indigenous groups …

The Carbon Market And Its Regulation In Brazil, Gabriel Wedy, Weber Amaral, Cacia Pimentel

Sabin Center for Climate Change Law

At present, the global geopolitical scenario is based on an economy undergoing a post-pandemic recovery, with inflation unleashed in various developed countries and a war conflict in Europe, which entails an overall increase in energy prices, food insecurity and a breakdown of supply chains. Under such circumstances, the outlook is one of enormous pressure on the mitigation and adaptation plans of the United Nations, which seeks to revert climate warming caused by human actions in the post-industrial revolution era. The watchword is decarbonizing the global economy by reducing greenhouse gas (GHG) emissions and changing carbon-intensive production regimes. Indeed, countries, companies, …

Incorporating Climate Change In Nepa Reviews: Recommendations For Reform, Michael Burger, Romany M. Webb, Jessica A. Wentz

Sabin Center for Climate Change Law

The National Environmental Policy Act (“NEPA”) requires federal agencies to conduct an environmental review prior to moving ahead with any major federal project, plan, or program that could significantly affect the environment. As part of the environmental review, agencies must share information with, and solicit feedback from, the public. The goal is to improve federal decision-making by ensuring that agencies take a hard look at the environmental effects of their actions and fully inform the public about those effects.

In guidance issued in 2016, the Council on Environmental Quality (“CEQ”)—the federal body charged with implementing NEPA—identified climate change as a …

Helping New Jersey State Agencies And Departments Align Their Actions With Ghg Reduction Mandates And Environmental Justice Principles, Jennifer Danis, Zoe Makoul

Sabin Center for Climate Change Law

This white paper analyzes New Jersey’s implementation gap in both the climate and justice space. Its findings are potentially applicable to the many other states who have set climate and justice goals, without robustly embedding them into their existing legal and administrative landscapes. New Jersey already has GHG reduction targets, a plan, and mapped pathways. While more aggressive tactics and targets may be required to meet evolving scientific knowledge, and cost-effective technology and markets will evolve over time, New Jersey’s climate-alignment tools and pathways are clear. The EMP, the 2020 GWRA 80x50 Report, and EO-274, among other strong state initiatives, …

Evaluating Climate Risk In Nepa Reviews: Current Practices And Recommendations For Reform, Romany M. Webb, Michael Panfil, Stephanie H. Jones, Dena Adler

Sabin Center for Climate Change Law

In recent years, policymakers, practitioners, and scholars have increasingly considered how climate change should factor into existing environmental review obligations, including review of U.S. federal agency actions under the 1969 National Environmental Policy Act (“NEPA”). Attention thus far has focused primarily on the critical question of how to account for an action’s contribution to climate change via direct, indirect, or cumulative greenhouse gas emissions. However, less focus has been given to the equally critical question of how actions will be affected by, and can prepare for, the impacts of climate change. This paper combines an extensive review of previously conducted …

The Law Of Enhanced Weathering For Carbon Dioxide Removal: Volume 2 – Legal Issues Associated With Materials Sourcing, Romany M. Webb

Sabin Center for Climate Change Law

Achieving the Paris Agreement’s goal of limiting the increase in global average temperatures well below 2°C, and ideally to 1.5°C, above pre-industrial levels will likely require the removal of carbon dioxide from the atmosphere. This could be achieved in various ways, including by enhancing natural weathering processes in which carbon dioxide reacts with silicate-based rocks, eventually forming carbonate minerals (e.g., limestone). Research suggests that the amount of carbon dioxide sequestered through this natural process can be increased by grinding silicate-rich minerals (e.g., olivine) or rocks (e.g., dunite) to increase their surface area and then spreading the powder over land or …

The Climate Leadership And Community Protection Act’S Environmental Justice Promise, Hillary Aidun, Julia Li, Antonia Pereira

Sabin Center for Climate Change Law

In 2019, New York State Governor Andrew Cuomo signed the Climate Leadership and Community Protection Act (“CLCPA”) into law. The CLCPA was passed with the objective of addressing climate change and minimizing the adverse impacts on the “economic well-being, public health, natural resources, and the environment of New York.” S. 6599, 2019-2020 Sen., Reg. Sess. § 1 (N.Y. 2019). The CLCPA seeks to meet these objectives by reducing statewide greenhouse gas emissions, scaling up renewable energy to avoid further climate change, and improving the resiliency of the state in order to address unavoidable climate change impacts. Id. The law created …

U.S. Climate Litigation In The Age Of Trump: Full Term, Korey Silverman-Roati

Sabin Center for Climate Change Law

From beginning to end, the Trump administration pursued an agenda of climate deregulation. The administration aimed a portfolio of actions at weakening federal climate protections and promoting fossil fuels.1 The executive branch did so by aiming to revise and rescind all major Obama-era agency rules to regulate greenhouse gas emissions, leasing public lands for fossil fuel development, attempting to curtail climate impact consideration in National Environmental Policy Act and Endangered Species Act reviews, and withdrawing energy efficiency measures, among other climate deregulation actions.2 Collectively, this effort served to advance the view that humans are not causing serious climate change and …

Cities Climate Law: A Legal Framework For Local Action In The U.S., Amy E. Turner, Michael Burger

Sabin Center for Climate Change Law

In the last several years, cities around the world have taken on a leading role in advancing policy to reduce greenhouse gas emissions. In the United States, dozens of cities have set goals targeting ambitious greenhouse gas emission reductions by a date certain (80% or "net zero" by 2050 are common formulations), and many more have pledged to achieve a 100% renewable or carbon-free energy supply.

Many U.S. cities are still determining the policies that would best achieve their climate commitments. In addition to political, financial, and technical considerations, these cities must consider how to structure their policies to comport …

Sabin Center Diversity, Equity, Inclusion And Anti-Racism Plan, Sabin Center For Climate Change Law

Sabin Center for Climate Change Law

The climate crisis is a crisis of unprecedented scope and scale. It arises from everywhere, and impacts everyone. But some – some countries, some companies, some communities, some individuals – are more responsible than others; and some are more impacted, and more vulnerable, than others. Climate change has made clear that diversity increases the power of potential solutions and the resilience to adverse impacts – for ecosystems, social systems, economic systems and their various hybrids and combinations. At the Sabin Center for Climate Change Law we believe that by creating and fostering a culture of diversity, equity, inclusion, and anti-racism, …

Climate Recommendations For A New Democratic President And A New Congress: A Compilation, Clara Grieder, Jordan Gerow

Sabin Center for Climate Change Law

Congress has not enacted a major new environmental law since 1990, when President George H.W. Bush signed the Clean Air Act Amendments and the Oil Pollution Act. He also supported, and the Senate ratified, the United Nations Framework Convention on Climate Change in 1992. The administration of President Bill Clinton supported the Kyoto Protocol, which was designed to achieve the objectives of the Framework Convention, but could not secure Senate ratification. President George W. Bush rejected the Kyoto Protocol and many other actions on climate change. President Barack Obama supported action on climate change; when he was unable to secure …