Human-caused climate change made the Los Angeles-area fires more likely and more destructive, according to a study out Tuesday. Why it matters: The study — from an international group of 32 climate researchers — shows how climate change fits into the myriad factors that made the multiple blazes one of California's most destructive and expensive wildfire disasters on record.

The fires, likely to be the costliest in world history, were made about 35% more likely due to the 1.3°C of global warming that has occurred since preindustrial times.