Bushfires or wildfires are mainly happening due to environmental restrictions against proper management of our lands. This is true in the U.S. and Australia. Fire is a natural part of the eco-system and removing fire has greatly increased the danger to nature - not just mankind.
Based on the actions of environmentalist and the wrong-headed ideas they have there are large areas of the world that will remain vulnerable to mega-fires and too few people seem to understand the science of forest management or admit the necessity of controlled burning, thinning, and the necessity for diversity within an individual forest. Too few understand that nature herself will correct the problem through fire and insects/disease when a forest is not actively managed and even natural fires are suppressed.
Sadly, instead of having an honest discussion and listening to educated people who understand forestry and implementing healthy solutions, this subject has become another boogie-man for people selling a lie - global warming.
It’s seems strange that our “reporters” never report that the burning trees in Australia’s forests are mostly highly flammable oil-rich eucalyptus trees.
I guess they don’t want to remind anyone that California’s “wild-fires” mostly burn chaparral, a highly flammable creosote-rich shrub.