Stop unchecked data center development

Healthier Future for Wisconsin

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Enbridge Pipeline Spill, Iron County, August 25, 2026

Public still in the dark more than a week after toxic pipeline spill

Air PollutionFighting Fossil FuelsLegalToxic Chemicals

Press Releases

Clean Wisconsin, Sierra Club Take Legal Action to Defend Federal Air Pollution Safeguards

Air PollutionLegalOur Health

Press Releases

The Defender Podcast Episode 85: Good News for the Rusty-patched Bumblebee!

Good News for the Rusty-Patched Bumblebee!

Our LandPesticides

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The legacy of Katie Nekola

Legal

Expert Insights

Support Clean Energy? You’re Not Alone

Wind & Solar Energy

Action Alerts

What’s behind PFAS contamination on Wisconsin lands?

PFAS

Expert Insights

Wisconsin Farmer Answers Your Questions About Wind Energy

Farming & FoodWind & Solar Energy

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How does contaminated sediment affect our health?

Health ResearchLakes, Rivers & StreamsOur Health

Health Briefs

Milwaukee residents are shaping a community-driven vision for faster disaster response, more equitable recovery systems, and better-connected neighborhoods

Milwaukee flood brings community voices to the surface

Resilient Milwaukee

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The Defender Episode 83: How to take the trash out of your life

How to Take the Trash Out of Your Life

Our HealthToxic Chemicals

Podcasts