Why doesn't Australia use artificial rainfall to put out forest fires?

There are several reasons for this problem: 1. Technical limitation: Although rainfall can help to control the fire in some cases, it cannot be effective in all cases. In many cases, the hot air produced by forest fires will lead to the rapid evaporation of rainfall, which can not achieve the effect of extinguishing or alleviating the fire. 2. Cost: Rainfall requires high capital and a lot of resources, because it needs to be equipped with special aircraft and facilities for rainfall. In addition, because the fire is very fierce, it may take several weeks and a lot of rain to really eliminate the fire source. 3. Consideration of environmental factors: Fire fighting by rain in some places may have adverse effects on the local ecological environment. For example, if the fire area becomes unstable due to burning vegetation and ashes, a large amount of water falling from rainfall may lead to increased risks such as mudslides. In addition, rainfall may also destroy local rivers and ecological environment. To sum up, rainfall can be a fire extinguishing method, but it must be used in a specific environment, and cost and environmental factors need to be considered.