CHICO, United States (AFP) — Thousands of US firefighters are battling a blaze in California that has grown so big it is generating its own weather system, with authorities warning conditions could worsen on Monday. The flames have grown so large that they have created clouds that can cause lightning and high winds, which in turn can serve to fuel the fire. Around 5,400 firefighters were struggling to contain the inferno. “It could be a […]