Climate Litigation News and Case Updates | March 30 – April 3, 2026

This page provides the latest climate litigation news, tracking key court decisions, new filings, and procedural developments from climate change lawsuits around the world. Updates are added on a rolling basis through the Climate Court Litigation Tracker, which monitors significant climate-related cases across national and international courts, including climate lawsuits, climate-related environmental litigation, biodiversity litigation, greenwashing cases, and corporate climate accountability claims.

Below are the latest climate litigation developments from this week, organised by date to reflect when rulings were issued or cases were filed. This page is updated daily as new climate and environmental cases emerge globally. Earlier updates and archived coverage are available in the Resources section.

March 30

United States:

• Coalition Challenges EPA’s Repeal of Mercury Pollution Limits in D.C. Circuit: Air pollution regulation, public health, power plant emissions

  
  

• Federal Court Vacates Trump-Era ESA Rollbacks, Restoring Core Protections: Biodiversity protection, endangered species, habitat conservation

• Arizona Settles Greenwashing Case Against Hefty® Over Non-Recyclable Bags: Greenwashing, consumer protection, recycling claims

March 31

New Zealand:

• Fonterra Admits Misleading “Grass-Fed” Claims in Greenpeace Greenwashing Case: Greenwashing, consumer protection, agricultural supply chains

United States:

• Groups Challenge Fast-Tracked Approval of Montana Cabinet Mountains Mining Project: Environmental impact assessment, endangered species protection, mining project approval

Zambia:

• Zambian Constitutional Court Rejects Climate Petition but Signals Alternative Legal Avenues: Constitutional law, climate governance, administrative accountability

April 1

Germany:

• German Environmental Aid Targets “Climate-Neutral” Fuel Claims in New Greenwashing Cases: Greenwashing, consumer protection, fossil fuel advertising

United States:

• U.S. Court Voids Nantahala-Pisgah Forest Plan Over Endangered Species Act Violations: Biodiversity protection, endangered species, forest management

April 2

Japan:

• Japanese Climate Lawsuit Seeks Damages for Government Inaction: Climate liability, government accountability, human rights

Sri Lanka:

• Sri Lanka Supreme Court Finds Fundamental Rights Violations in Meethotamulla Garbage Dump Disaster: Environmental harm, fundamental rights, waste management

  
  

United States:

• Lawsuit Challenges Trump Administration’s Sweeping ESA Exemption for Gulf Oil and Gas: Endangered Species Act, offshore drilling, biodiversity protection

  
  

• Class Action Targets “Plant-Based” Baby Products as Alleged Greenwashing Scheme: Greenwashing, consumer protection, false advertising

  
  

• Maryland Federal Court Upholds Building Emissions Standards, Rejecting Federal Preemption Challenge: Building emissions, federal preemption, climate regulation

April 3

No updates recorded.

More detailed summaries, original pleadings, and real-time tracking are available to subscribers through the Climate Court Litigation Tracker. As climate litigation continues to shape corporate behaviour, regulatory enforcement, and climate-risk governance, staying informed about legal developments has become essential for legal practitioners, businesses, investors, civil society organisations, and policymakers worldwide.

Full case analyses, original pleadings, and real-time tracking are available to subscribers through the Climate Court Litigation Tracker. As climate litigation continues to shape corporate behaviour, regulatory enforcement, and climate-risk governance, staying informed about legal developments has become essential for legal practitioners, businesses, investors, civil society organisations, and policymakers worldwide.