The U.S. Supreme Court held that the CAA displaces any federal common law right to seek abatement of carbon dioxide (CO2) emissions from fossil-fuel fired power plants. A group of states, private land trusts, and a city a filed suit against four power companies and the TVA claiming that their e...

A California court ordered the California Air Resources Board to set aside its "functional equivalent document" and scoping plan to reduce greenhouse gases as it relates to cap and trade. The court ruled that the board inadequately described and analyzed project alternatives in violation of the...

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 regulations requiring automobile manufacturers to reduce fleet-average greenhouse gas emissions from new motor vehicl...