One of the most fundamental questions in climate justice is also one of the most difficult to answer: how can the climate impacts of carbon dioxide emissions generated in one country be made legally sanctionable in another? Those most
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Uncertain Remedies for Frozen Federal Climate Funding
On February 24, 2026, the United States Court of Appeals for the District of Columbia Circuit held oral arguments in the case Climate United Fund v. Citibank to consider the future of almost $20 billion in climate funding appropriated under
AG Investigations and Copycat Anti-ESG Legislation Proliferate Despite Losses in Court
Last week, Texas v. BlackRock (E.D. Tex.), the first antitrust case challenging climate collaborations by financial institutions, reached an initial resolution. Texas Attorney General (“AG”) Ken Paxton announced that one of three institutional-investor defendants, Vanguard, had settled. As part of
Defending the Climate Science Reference Guide
On January 29, 2026, a coalition of 27 state attorneys general, led by West Virginia Attorney General John B. McCuskey, sent a letter to the Federal Judicial Center (FJC) demanding immediate withdrawal of the “Reference Guide on Climate
Supreme Court Agrees to Hear Fossil Fuel Companies’ Appeal in Boulder Climate Case but Asks for Briefing on Threshold Jurisdiction Questions
Yesterday the U.S. Supreme Court granted three fossil fuel companies’ petition for a writ of certiorari seeking review of the Colorado Supreme Court’s opinion allowing the County Commissioners of Boulder County and
Canadian Senate Report Recommends Canada Lead on Marine Carbon Dioxide Removal Strategy
The Trump Administration’s increasing commitment to scientific nonsense regarding climate change creates an opportunity for other countries to lead. The Canadian Senate is recommending that Canada do just that with respect to marine carbon dioxide removal (mCDR). Canada is in
Responding to EPA’s Claim that U.S. Motor Vehicle Emissions Have a “De Minimis” Impact on Climate-Related Harms
On February 12, 2026, the U.S. Environmental Protection Agency (EPA) issued a final rule rescinding the 2009 Greenhouse Gas Endangerment Finding and eliminating all federal greenhouse gas (GHG) emission standards for U.S. motor vehicles and engines. To justify this
Data Center Litigation – An Emerging Frontier for Climate Litigation?
The explosive growth of artificial intelligence (AI), cloud computing, and digital services has brought renewed attention to the physical infrastructure underpinning the digital economy: data centers. While critical to the operations of major tech companies, data centers are now among
The ECtHR’s Climate Jurisprudence in 2025: Grappling with Fossil Fuels, Rejecting Extraterritorial Jurisdiction, and Still no Victim Status
A Year of Climate Rulings
Handing down no less than five climate rulings in 2025, the European Court of Human Rights (“the ECtHR”) has been busy deciding the backlog of cases it had adjourned in 2023, while it dealt with
Sabin Center Submits Amicus Brief to the African Court on Human and Peoples’ Rights
On Monday, February 9, 2026, the Sabin Center submitted an amicus curiae brief to the African Court on Human and Peoples’ Rights (African Court) in the matter of the Request for an Advisory Opinion on the Obligations of States with