Climate Change and SustainableEnergy Bill

Nigel Lawson was a great reforming and pioneering Chancellor of the Exchequer who did many great things for the British economy, but I am slightly mystified as to why he should be quoted as a great guru on climate change. Will my hon. Friend tell me what it is about the office of Chancellor of the Exchequer that prepares and trains Nigel Lawson to lecture the rest of the world on climate change and the specific science about it?