Guardian: Post-Copenhagen, we may be heading towards a future in which no comprehensive successor to the Kyoto regime is politically possible. It is therefore crucial that the centre of gravity of decision-making on how we respond to climate change moves towards the sub-national level. The need for such a shift from "top down" to "bottom up" is becoming clearer by the day. Over the last decade, records of weather and climate trends have revealed larger and more unusual regional and local …