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

Climate litigation updates to be added here soon.

April 2

Climate litigation updates to be added here soon.

April 3

Climate litigation updates to be added here soon.

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.