“…This ambivalence refers to the understanding that the two concepts are part of the same repertoire historically developed around the term, being based, basically, on three foundations. Sustainability: (1) it is presented as an interface issue between "society" and "nature" -and, therefore, hybrid and interdisciplinary (Berkes et al, 2003;McMichael et al, 2003); (2); it was mainly formed by the conceptualization of the natural sciences to the detriment of the social sciences (Drummond, 1997;Palmer et al, 2004) but widespread and suitable for different perspectives and spheres of political action; and, therefore, (3) it appears to be very wide, transiting between the polissemic and the assemic (Nobre, 2002;Redclift, 2007).…”