An ignition source is anything that can provide enough heat to start a spark. Most fires, however, are caused by humans: Around 85 percent of wildfires over the past two decades were started by people. Some human-caused wildfires are set intentionally, but most are accidental, with triggers such as unextinguished campfires, target shooting in extremely hot and dry environments or setting off smoke bombs. Power line failures also have started wildfires. Pay attention to fire weather alerts from your local authorities before lighting a fire.

Source: Washington Post July 28, 2021 11:03 UTC