BBC: As the latest meeting of the InterAcademy Council’s review into the Intergovernmental Panel on Climate Change convenes in Montreal, IPCC chairman R K Pachauri says the past year has been “momentous” for the organisation, and not always for the right reasons. In this week’s Green Room, he sets out how and why the panel was established, and argues that it plays a vital role in the global climate policy debate. I would like to start by saying that I am not deaf to those who do not agree …