Alex Haxeltine is a Senior Research Associate at the Tyndall Centre for Climate Change Research in the UK. He has a first degree in physics, an MSc in atmospheric sciences and a PhD in ecology from the University of Lund in Sweden. His doctoral research in ecology was centred around the development of the first simulation model of global ecosystems to combine the dynamics of terrestrial biogeography and biogeochemistry: and this model has now been widely used to assess the impacts of future climate change on natural ecosystems. He is currently working with a research team that is developing integrated assessment simulation models for use in assessing different policy scenarios for future sustainable development pathways. Current research activities focus firstly on developing news ways of incorporating stakeholder dialogues into the research process, and secondly on developing new ways of incorporating social and organisational change into socio-economic modelling frameworks using techniques emerging from recent advances in complexity research.