The big day dawns in a fog of confusion and press reports of rifts between continental Europe and the Anglo Saxons, following what were portrayed as rival press conferences by Obama and Brown in one part of London, and Sarkozy and Merkel in another. Today will show how much of this was just playing to the domestic gallery – Sarkozy

Leaders like Obama and (increasingly) Gordon Brown seem to be gravitating towards the ‘green new deal’ argument that massive international spending in response to the financial crisis must also shift economies onto a ‘low carbon recovery’ path. Looking at the science, there’s little argument – we have to massively reduce the carbon intensity of production if we are to keep