When we think of cleaner and greener alternatives to gas-powered cars and trucks in California, electric vehicles come immediately to mind. But there is an alternative --hydrogen-powered cars.Reporter: Saul Gonzalez, The California ReportGovernor Gavin Newsom is defending his decision to appoint Emily’s List president Laphonza Butler to Dianne Feinstein’s open Senate seat –which potentially upends the on-going campaigns for that position in next year’s election. Butler is expected to be sworn-in on Tuesday. Reporter: Joe Fitzgerald Rodriguez, KQEDCalifornia water regulators have released support plans for the Bay-Delta watershed, which experts say is in an ecological crisis.  But this doesn’t mean final solutions are in sight.Reporter: Rachel Becker, CalMatters Learn more about your ad choices. Visit megaphone.fm/adchoices