My question is to the Minister representing the Minister for Industry and Science, Senator Farrell. In an answer to a question on notice asking for the model used to prove that reducing CO2 emissions to net zero by 2050 will actually achieve a 1.5-degree reduction in global temperatures, the CSIRO replied that there are over 40 global climate models used around the world. Why should the Australian taxpayer stump up billions of dollars in subsidies for renewable energy when the scientific experts can't even agree on the method used to calculate CO2 emissions and their impact on temperature?