I agree that Australia needs to change a lot of its environment, but not for any MMGW nonsense, but because it needs changing to give a better life to Australians.
The way to do this is to let nature work for your benefit, with some technological help. For example, depending on geology, Australia might be able to turn hundreds of square miles of its inland desert green.
How in the world? Sea water. In many places around the world, when brine sea water percolates through the ground, the salt is filtered, and the water table is fresh water.
Perhaps with a canal project, Australia could create an artificial “inland sea”, whose waters would in turn create an artificial aquifer that would stretch for perhaps hundreds of miles.
This fresh water aquifer would be easy to tap with ordinary wells and windmills, bringing fresh water to the surface.
After the canal was built, nature would do the rest.
Perfect project for 200 nukes.