The idea of sustainability in one form or another has taken on great appeal on many fronts since the commencement of the Earth Summit in Río de Janeiro, Brazil in 1992. In the contemporary period there are many actors and institutions working to reduce the ecological footprints of humanity at global, multi-lateral, bilateral, national, regional, bioregional, state/provincial, county, and most importantly, the municipal and watershed level. Here I focus on a bioregion where the idea of sustainability has been institutionalized in one form or another since at least the early 1970s: the Great Lakes-St. Lawrence ecosystem. The bioregion is all the more relevant because it is situated in the heart of traditional industrial North America, so any efforts in the area of sustainability, whatever its form, are of special importance. Before turning to this specific North American bioregion, I examine some communicative trends at the national level (USA), making a case for why it is important to view sustainability discourses at local-level scales of analysis. There is currently a fairly aggressive effort to institute large scale indicators and macro-approaches to sustainability (so-called 'national level standards'), and here I offer an alternative perspective that situates sustainability as best articulated at the local or bioregional level of governance (as suggested by Lipschutz, 2004 and many others). These differing forms of sustainability in urban North America can be understood on communicative terms, adding to the pastiche of narratives pertaining to sustainability in the city in the early 21st century.Departing from traditional 'hard' measures of sustainability, I take a discursive or communicative approach to the topic through examination of select newsprint media. Such an approach; which is essentially a 'crude' measure of one particular way to conceptualize environmental sustainability, sustainable development, and other linked green ecological perspectives, may provide help to practitioners and citizens but is really only a measure of what has happened, not what will or could happen. Linking this discursive method to actual implementation brings together an empirical and theoretical approach that can deepen our understanding of the capacity of cities and bioregions to engage in sustainability initiatives, along with re-engaging conceptions of power, broadly considered, in the city.Such discursive measures can be a proxy for the degree to which "hard" scientific knowledge generated at the research and practitioner level is transmitted to the mass public. It is a crude attempt to measure how cities have understood and discussed the city as an ecosystem, an idea advocated by many who acknowledge the heavy ecological footprint a city exerts in history but who still push for the idea of eco-cities. The measure is crude however, because it only measures frequencies of allegedly important terms and terminology that I argue should be in place at the popular level to create the conditions or prerequisites of sustainability initiatives, successful or otherwise. It does not translate into a measure which can actually tell us how seriously a city or watershed is taking sustainability, but it does give us a crude measure of power, as indicated by what news print has decided to print in the first place. It is a baby step towards considering to what degree mass publics may be participating in sustainability initiatives, beginning with a look at how news media present sustainability issues. Toronto is speaking a discourse of sustainability of sorts, while a communicative vacuum exists in Detroit. Nonetheless two models of sustainability in the city are presented by the pairing of the two cities. ..PAT.-Unpublished Manuscript [ABSTRACT FROM AUTHOR]