What can be learned from California wildfires?

The wildfires burning in the US state of California have killed 21 people, with hundreds still missing. More than 3,500 homes and businesses have been destroyed – and fire experts say some of the damage could have been prevented.

The wildfires burning in the US state of California have killed 21 people, with hundreds still missing.

Around 1,000 firefighters have been deployed to suppress the flames.

More than 3,500 homes and businesses have been destroyed – and fire experts say some of the damage could have been prevented.

Al Jazeera’s Rob Reynolds reports from Los Angeles, California.