Senator ROBERTS (Queensland) (14:34): Relying on the CSIRO means that you rely on the UN's IPCC. Did you know that in each of the UN's IPCC's latest reports, being 2001, 2007 and 2013, the sole core chapters in each report claiming unusual global warming and attributing it to human carbon dioxide—being chapters 12, 9 and 10 respectively—contain no empirical evidence for the claim of human causation—yes or no?