Dr Mark Rickinson is an independent educational research consultant, who specialises in research and evaluation, research reviews and research training (www.markrickinson.co.uk). He is also a Research Fellow at Oxford University Department of Education and the Policy Studies Institute, London. Between 1999 and 2005, he was a Senior Research Officer at the National Foundation for Educational Research. He is a former Chair of the Ecological and Environmental Education Special Interest Group of the American Educational Research Association and a past Coordinator of the FERN Environmental Education Research Network. Dr Cecilia Lundholm is a Research Fellow at Stockholm University Department of Education, where she is a member of the Research group on Conceptual Development (www.ped.su.se/rcd), and at the Stockholm Resilience Centre, Stockholm University (www.stockholmresilience.org). Lundholm's research interests concern communication and learning about environmental and sustainability issues in formal as well as non-formal contexts. Her projects focus on moral understanding, the understanding of natural and societal phenomena and their inter linkages, and the teaching and learning of interdisciplinary environmental education. She is engaged in the Swedish National Graduate School in Education and Sustainable Development (www.did.uu.se/gresd) funded by the Research Council's Committee on Educational Science. Dr Nick Hopwood is a Research Fellow at Oxford University Department of Education, where he has spent several years engaged in researching issues to do with environmental and geographical education, values, and learners' conceptions. Initially working in secondary schools, he has more recently developed a parallel interest in graduate (particularly doctoral) education. He is a member of GEReCo (Geography Education Research Collective) and has worked with the Geographical Association on curriculum and practice development shaped by and around young people.