A district court dismissed as moot a lawsuit seeking to reinstate a permit for the Keystone XL oil pipeline to cross the U.S.-Canada border. Twenty-three states challenged the president's authority to revoke the permit, arguing the permitting decision concerned only international and interstate comm...

A district court granted Delaware's motion to remand to state court its climate liability lawsuit against fossil fuel companies. Delaware argued it had suffered, and would continue to suffer, damages from climate impacts caused by the companies' denial of and disinformation about the existence, caus...