The California fires erupted amid extremely dry conditions. UCLA scientists say extreme heat linked to climate change was a factor in the fires' intensity.

Climate change didn’t start the wildfires that are ravaging Los Angeles County this week. But the big swings in weather patterns that have accelerated over the past two decades serve as rocket fuel that intensifies the flames and spreads the devastation.

Many factors, such as strong Santa Ana winds and urban planning decisions, played into the recent destructive wildfires in the Los Angeles area. But the evidence is clear that climate change contribut