The distribution of these fires that are mostly unnoticed by the human inhabitants of Australia tells us something about this land of ours, which is reinforced by the map. Firstly, it gets very very hot and dry away from the sea and the only major mountain chain (which is on the East coast of Australia). Secondly, the desert vegetation is burning. (This is happening more and more often and some of the vegetation may not return due to this.) Thirdly, almost nobody notices because humans cannot easily survive in those regions. If you scroll down to the satellite and desert maps below the NASA image, you will realise why having more and more people come to Australia is a bad idea. We are using up a very thin fringe of green; it is getting hotter, and the desert is expanding into the inhabited areas, preceded by high temperatures and fire.