California’s sweeping new climate-disclosure mandates have triggered an escalating legal battle now arriving at the U.S. Supreme Court, with business groups asking to temporarily halt two state ...

In 2009, the U.S. Environmental Protection Agency formally declared that greenhouse gas emissions, including from vehicles ...

The Trump administration is playing a leading role in litigation to stop climate action. Blockbuster legal fights over climate policy are on the horizon this year as the Trump administration and ...

On January 9, 2026, the Ninth Circuit heard oral argument in the consolidated appeals challenging California’s climate ...

Climate lawfare is Big Business. State, county and city lawyers have filed some 30 lawsuits, alleging that oil companies misrepresented the impacts of their products and caused billions of dollars in ...

The agency is close to finalizing its rollback of the endangerment finding. Legal experts say its success could hinge on these details.

Montana regulators this month finalized guidance for state agencies that are now required to analyze the climate-change impacts of their decisions.