Dr. Alberto Ayala is Executive Director of the Sacramento Metropolitan Air Quality Management District, Adjunct Professor at West Virginia University, and former Deputy Executive Officer of the California Air Resources Board. He is a mechanical engineer with BS, MS, and PhD degrees and he is author or co-author of more than 150 peer-reviewed publications and reports. including contributing author to the book “Ambient Combustion Ultrafine Particles and Health” and author of the upcoming book “Three Forks in the Road, the Volkswagen diesel cheating scandal.”