Senator McALLISTER (New South Wales—Minister for Emergency Management and Minister for Cities) (14:28): We should acknowledge that, in asking this question, Senator Roberts of course starts from the premise that climate change is not real, is not caused by humans and is not a problem that requires us to deal with it in any way. These are the positions he has put repeatedly— The PRESIDENT: Minister McAllister, please resume your seat. Senator Roberts, please go ahead. Senator Roberts: I don't need a dissertation on myself; I'm asking about temperatures. The PRESIDENT: Thank you, Senator Roberts. I'll listen to the minister's answers, but she has been answering your question. Senator McALLISTER: As I was saying, the starting point for Senator Roberts's question, as he has made very clear over his long period in this place, is that he does not believe in the science of climate change, he does not believe that that science has been demonstrated and he does not believe that there needs to be— The PRESIDENT: Minister McAllister, please resume your seat. Senator Hanson. Senator Hanson: I question Senator McAllister's response— The PRESIDENT: Is it a point of order? Senator Hanson: Yes, it is a point of order. She's repudiating Senator Roberts's character in her response— The PRESIDENT: Senator Hanson, that is a debating point. Please resume your seat. Senator McALLISTER: It's passing strange to be asked about the effectiveness of climate action because I don't believe that Senator Roberts actually wishes it to be successful. However, I will say this. At COP28, the information that delegates received was that the projections had been for a four-degree increase in temperature and that that had been reduced to three degrees based on the actions that had been taken by states to date. Three-degree average global warming is actually a very troubling number. It offers very disturbing consequences for many Australians, including Australians in your home state, Senator Roberts. There is a heatwave warning in place today for the peninsula region of Queensland, and there are flooding warnings in Queensland. All of the advice before us suggests that the extreme weather events that Queenslanders are exposed to are only going to increase as a consequence of a warming climate. It is in Australia's interests for there to be effective global action to contain warming. That's why we are— (Time expired) The PRESIDENT: Senator Roberts, first supplementary?