A coalition of 24 states, 10 cities, and five counties filed a petition in the D.C. Circuit challenging the EPA’s repeal of the 2009 endangerment finding for greenhouse gases, arguing it undermines decades of regulatory progress.

The endangerment finding underpins U.S. climate policy by enabling emissions standards for vehicles; its repeal is framed as weakening leadership in transportation and climate efforts.

The finding determined that greenhouse gases threaten public health and welfare and formed the basis for standards on cars, power plants, and other sources, with the lawsuit also targeting the EPA’s rollback of limits on vehicle emissions.

California highlights climate impacts in Minnesota as rising temperatures, heavier rainfall, drought, and increasing billion-dollar disasters, along with threats to ecosystems, agriculture, tourism, and vulnerable communities.

The article notes additional context from experts and sources, including Columbia University findings on scientific consensus.

New York Gov. Hochul seeks more time from lawmakers to implement climate provisions in a way that reduces costs for residents, potentially delaying deadlines.

The piece portrays broader Trump administration actions as anti-science and anti-public health, citing weakened protections, deregulation, and cuts to clean energy, while noting California’s climate leadership.

Ongoing tensions between federal climate actions and state opposition raise questions about future air quality, transportation costs, and public health.

Advocates argue that climate disasters are harming communities and that rolling back protections will worsen health and safety risks, with quotes from state attorneys general criticizing inaction.

The dispute is expected to rise again before the Supreme Court, which has become more conservative, signaling broad implications for future climate regulations.

Public participation in the EPA move included over half a million comments, with environmental groups opposing and industry groups supporting deregulation and cost reductions.

Scientists have long warned about climate impacts on extreme weather, air quality, and health, including risks from heat waves, wildfires, floods, and disease.