Every summer, we listen for the most basic facts about any wildfire: human- or lightning-caused?
Human-caused does not necessarily mean deliberate; it just means the activities of people started the fire.
And a new scientific study shows that humans have it all over lightning as starters of wildfire: 84 percent of wildfires trace back to human causes.
Jennifer Balch at the University of Colorado is the lead author of the study.
She details the methods used to track the information, and what we do with it.