December 20, 2019 7:09 pm Carbon Dioxide: The Invisible Indoor Air Pollutant Poor ventilation and air quality in California’s schools could be impacting students’ health and academic performance. Jessica Aguirre reports. US & World Videos 2:09 In the news: Google Maps changes, fake Costco email, one-on-one with Steph Curry 2:37 San Francisco State adds climate justice course to graduation requirement 2:40 In the news: Bay Area Super Bowl, NBA All-Star weekend, vehicle collides into pub parklet 2:35 Checking in on California water, snow levels 4:55 Political analysis: Musk on the move