The bold headline of a recent Los Angeles Times editorial by the hydrologist Jay Famiglietti starkly warned: “California has about one year of water left. Will you ration now?” The write-up quickly made the social media rounds, prompting both panic and the usual blame game: It’s because of the meat eaters or the vegan almond-milk drinkers or the bottled-water guzzlers or the Southern California lawn soakers. ….