“…Developed by sociologists of science including Bruno Latour, Michel Callon and John Law (Callon, 1987;Callon et al, 1986;Latour, 1987;Law, 1991), the ANT has been extended beyond sociology to the analysis of geographical and environmental issues (e.g. Kortelainen, 1999;Burgess et al, 2000;Comber et al, 2003;Eden et al, 2000;Murdoch, 1995Murdoch, , 1997aMurdoch, , b, 1998Murdoch, , 2001. Its analytical framework is rooted in three central themes: heterogeneity, symmetry and impartiality.…”