Since millions of Californians began staying at home and off the roads in March, air quality in the Golden State has visibly improved. In a peer-reviewed study published May 4 in the journal Nature Sustainability, Yifang Zhu of UCLA Fielding School of Public Health and Institute of Environment & Sustainability describes a pathway for California to dramatically cut greenhouse gas emissions and air pollution by 2050.  Taken together, these actions would prevent about 14,000 premature deaths from air pollution-related illnesses each year, all while helping to reduce climate change.