Green deniers of the science Do the Greens listen to scientists when they blame global warming for what they clearly think is an increase in cyclones in Queensland? Here is Bob Brown in 2011 after Cyclone Yasi: GREENS leader Bob Brown says the coal mining industry should foot the bill for the Queensland floods because it helped cause them... "It's the single biggest cause - burning coal - for climate change and it must take its major share of responsibility for the weather events we are seeing unfolding now," he said in Hobart today. Here is new Greens leader Christine Milne after Cyclone Oswald: Firstly to the natural disasters occurring around the country, particularly in Queensland... But it's time for parliamentarians to recognise that we are going to be living with extreme weather events every year from now on. We can't say where, we can't say when, but what we know in a world that is increasingly warming, we are going to see more extreme events. But here is a new peer-reviewed paper, Reconstructing tropical cyclone frequency using hydrogen isotope ratios of sedimentary n-alkanes in northern Queensland, Australia: This suggests that on average tropical cyclone frequency did not change during the past 200 years. And here is the Bureau of Meteorology (a bit behind in updating its graphic): Thanks to reader Steve.