
A wildfire, bushfire, wild land fire or rural fire is an unplanned,
unwanted, uncontrolled fire in an area of combustible vegetation
starting in rural areas and urban areas. Depending on the type of
vegetation present, a wildfire can also be classified more specifically
as a forest fire, brush fire, bushfire (in Australia), desert fire,
grass fire, hill fire, peat fire, prairie fire, vegetation fire, or veld
fire. Many organizations consider wildfire to mean an unplanned and
unwanted fire, while wild land-fire is a broader term that includes
prescribed fire as well as wildland fire use (WFU; these are also called
monitored response fires).
Wildfires can be characterized in terms of the cause of ignition, their
physical properties, the combustible material present, and the effect of
weather on the fire. Wildfires can cause damage to property and human
life, although naturally occurring wildfires may have beneficial effects
on native vegetation, animals, and ecosystems that have evolved with
fire. Wildfire behavior and severity result from a combination of
factors such as available fuels, physical setting, and weather. Read more
Wildfire Smoke Can Attack Almost Every Part of Your Body Not Just Your Lungs Science Alert - July 20, 2026
This past week, a child stood on the observation deck of Toronto's CN
Tower and looked out at a city skyline blurred by haze. Hundreds of
miles away, National Guard troops patrolled a smoke-dimmed National Mall
in Washington, and commuters pulled on masks. Smoke drifting south from
Canada's wildfires has become an almost annual visitor to American
skies. None of these scenes look that unusual these days.