country, but this is a big fire. and the scope for us in the states, this would be one of the largest fires ever to occur in the united states. so, yeah, it is a giga fire. reporter: total area burned in canada already has shattered records, now 10 million hectares, an area nearly as large as the state of ohio and still burning. when they burn like this, there is no way to put people in front of it to even stop the fire. there is no amount of resources on the ground or from the sky that will be able to stop one of the fires when they get the momentum. reporter: as shocking and frankly unsettling as it is, this fire is just far too large to extinguish. the fire already burned is larger than most countries on the planet. it means that not only does the fire burn, but there is going to be a lot of smoke. and that means many american cities could be shrouded in smoke on any given day for weeks
international firefighters doing what they can to slow wildfires that just won t quit. at this point we re just trying to secure the edge and make sure that the communities are safe. reporter: the silver state hot shot crew is looking for hot spots. they are firefighting crews specially trained and skilled, now taking on canada s record breaking wildfires. i know you re from montana, big sky country, but this is a big fire, big territory. yeah, in the scope for us in the states, this would be one of the largest fires ever to occur in the united states. so yeah, it s a giga fire. reporter: the total area burned in canada already has shattered records. now 10 million hectares, an area nearly as large as the state of ohio and still burning. when they burn like this, there s no way to put people in front of it to even stop the fire. there s no amount of resources
Wildfire has always been a natural part of California's ecosystem. But a historical lack of forest management combined with climate change and human activity has contributed to larger and more destructive fires in recent years.