While authorities still don’t know what sparked the deadly fires in the Los Angeles area, they do know one clear way the flames have spread: embers.
At least 24 people have died in the fires that have destroyed more than 12,000 structures since starting last Tuesday. The flames have been fueled by strong winds, which not only aid combustion by increasing the oxygen supply but carry embers to unburned areas.
Contrary to popular belief, experts say most homes destroyed by wildfires aren’t overcome by a racing wall of flames, but rather burn after being ignited by airborne embers.
Here’s a look at what embers are and the role they play in
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