Ann E. Carlson

Ann Carlson is the Shirley Shapiro Professor of Environmental Law, and the Faculty Director of the Emmett Institute on Climate Change and the Environment at the UCLA School of Law. She is also on the faculty of the UCLA Institute of the Environment and Sustainability.

Professor Carlson is one of the country’s leading scholars of climate change law and policy. Her work has been published in leading journals including the UCLA, California, Northwestern and Michigan law reviews. She is co-author (with Daniel Farber and Jody Freeman) of a leading casebook, Environmental Law (8th ed.). She is also a frequent commentator and speaker on environmental issues, particularly on climate change, and blogs at Legal Planet.

How California’s war on smog and its ambitious car pollution rules made everyone’s air cleaner

The Clean Air Act gave California the authority to issue tough pollution standards for vehicles, spurring the development of the catalytic converter and cleaning up America’s air.

April 7, 2026