The issue is often portrayed as a battle between the developed and the developing world. Wrong. It is something which affects us all and which we need to address together. This week is Commonwealth week and its theme is Climate Change. There is no other issue which will affect all the 53 countries of the Commonwealth (large, small; rich, poor; north, south) so profoundly. This issue is often portrayed as a battle between the developed and the developing worlds; between countries like Britain and India. Wrong. It is something which affects us all and which we need to address together. The origins of climate change lie p rincipally in the developed economies. But, unjust though this may seem, its impact will be at least as great in the developing world. In India probably greater: the retreat of the glaciers; rising sea levels; new difficulties facing those farming in arid regions; a less predictable monsoon