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Search by county to see the level of smog pollution in the air. Smog can trigger asthma attacks and increase the risk of heart and lung diseases.

Search by county to see the level of soot pollution in the air. Soot causes death and serious health harms.

The progress we have secured is a testament to the fact that the law and science are on our side. It also reflects the desire of most people across the country for a safer and cleaner world. Our shared wins represent decades of painstaking work, culminating in concrete measures that will save lives across the country. We’re celebrating our victories and the many opportunities ahead.

The Colorado Warehouse Map provides a helpful visual of warehouse concentration throughout the state and within the Denver Metro North Front Range Ozone Nonattainment Area.

A timeline of the creation of and fight to defend the National Forest Roadless Area Conservation Policy.

Allowing logging and roadbuilding on now protected lands in the Tongass National Forest is a deeply unpopular action that poses grave harm to the forest

For over a hundred years, the Antiquities Act of 1906 has protected America’s natural and historic wonders from mining, drilling, looting, and industrial development.

Using a loophole, the Trump administration exempted coal power plants from mercury and arsenic limits, polluting the air we breathe.

Our teams in Bozeman, Montana, and Denver, Colorado, have spent decades fighting to safeguard biodiversity, to advance a just transition to clean energy, and to protect people’s health. We’re pleased to share highlights of our progress, and a glimpse at what’s next.

We will continue standing up for the principle that the government must consider predictable environmental harms before it acts.

Livestock groups’ concerns and requested management changes were already addressed

Conservation groups ask Colorado Parks and Wildlife Commission to reject livestock industry petition

Megan Kemp, Colorado Policy Advocate, Rocky Mountain Office: “(The bill) fails to provide critical safeguards for utility customers, neglects to consider impacts on communities and undermines our progress toward meeting critical climate goals.”

Earthjustice fights to protect imperiled species and the habitats that support their lives — and ours. Here are highlights of our work to defend our natural world over the past year, and a glimpse at what’s next.

El supremo anula método de 50 años de antigüedad para la aprobación gubernamental de proyectos potencialmente dañinos

Court sweeps aside 50-year-old method for government approvals of potentially harmful projects

Landmark decision approves portfolio of resources focused on energy efficiency and beneficial electrification

Scientists, legal experts, and environmental groups also urge Trump administration to drop proposed rule