Guardian: I wonder what Tony Abbott will say about the record heatwave now ravaging his country. The Australian opposition leader has repeatedly questioned the science and impacts of climate change. He has insisted that "the science is highly contentious, to say the least" and asked demonstrating what looks like a wilful ignorance "If man-made CO2 was quite the villain that many of these people say it is, why hasn't there just been a steady increase starting in 1750, and moving in a linear way up the graph?"...