Staff and faculty of the UCLA Emmett Institute filed an amicus brief in the U.S. Court of Appeals for the Ninth Circuit defending the right of air pollution regulators to set important standards under the Clean Air Act to protect public health. The case is Rinnai America Corp.et al. v. South Coast Air Quality Management District, and it involves a challenge to South Coast AQMD's recent efforts to reduce nitrogen oxides (NOx) pollution by accelerating the transition to zero-NOx-emissions models for certain water heaters and boilers.