Oil companies are once again asking the high court to intervene in climate deception lawsuits across the U.S. — part of an all-hands-on-deck effort by Big Oil and the Trump administration to shut the cases down.

The Trump administration is undoing reporting and regulation of a powerful climate pollutant. Can nonprofit and third-party trackers fill the gap?

An anti-greenwashing law in Canada compelled polluters to scrub misleading content. Could a new bill in Pennsylvania set an example for the United States?

Fossil fuel interests are deploying unprecedented strategies to hide evidence of companies’ deception and block liability lawsuits before they reach trial.