California’s air pollution levels are among the worst in the country, and climate change is making the situation worse, according to a new report from the American Lung Association. Despite the state’s efforts to reign in air pollution, 90 percent of California residents are exposed to unhealthy air at some point during the year, according to the State of the Air 2018 report. While air pollution is bad for everyone’s health, low-income communities, children, seniors, and people with underlying health problems tend to be most impacted when ozone and particle pollution levels soar, experts said. Afif El-Hasan, a pediatrician in...