The D.C. Circuit denied a petition for review challenging EPA's decision granting California a waiver from federal preemption under the CAA that allows the state to implement its own…

A California court ordered the California Air Resources Board (CARB) to set aside its "functional equivalent document" that evaluates the environmental consequences of its climate…

A California court issued a tentative ruling that would require the California Air Resources Board to set aside its "functional equivalent document" that evaluates the environmental…

The Court held that the U.S. Environmental Protection Agency (EPA) has the statutory authority to regulate greenhouse gases (GHGs) from new motor vehicles. The case arose after private…