One of LA’s gas power plants will start burning hydrogen to meet clean energy goals. The controversial decision has some worried about air quality and explosion risks. LA’s mosquito population has been on the rise for a decade, but a winter of rain has created better conditions than ever for the bloodthirsty creatures. Which city has the best burrito in California? San Francisco has a super-sized version, San Diego incorporates fries, LA has dozens of types from around the world.