 So our listener Luke wants to know if all this turbulence is increasing. Paul says the data for mountain and storm-related turbulence is still unclear. But for the invisible clear air turbulence, we now have over a decade's worth of scientific research. And yes, indeed, it has been increasing. And yes, I'll pre-empt you before you ask the question, it is climate change. We can blame the increase confidently now on climate change. How would an increase in global temperatures affect wind speed?