Food is the essential foundation for sustainable and healthy communities. Increasing population and urbanization, limited resources, and complexities of interactions necessitate a comprehensive and in-depth understanding of the dynamics of the global trend of urbanization. The key objective of this paper is to generate new environmental, social and economic perspectives and practices that are responsive to the rapidly urbanizing agricultural food system. We used the sustainability paradigm in the context of environmental, social, and economic sustainability to outline the three transitioning states and perspectives (unconnected/silos; interconnected/linkages; and interdependent/nested/systems) for urban agricultural food systems. We sought to ferret out the key driver/response variables and their cross-scale interactions in the urbanizing food-energy-water nexus. We used a five-step qualitative analytical method to develop a conceptual model to capture the interacting variables and their responses. The complexity in the driver/response variables and their cross-scale interactions were identified. Then three hypothetical scenarios were used to represent complexity modeling: least, medium and most complex. These variables were combined with outside dimensions (e.g., innovation, stakeholders, urbanization) for selected scenarios and deconstructed using spider web and causal loop models. The urbanizing socio-ecological systems, across various spatial (local to global) and temporal scales (days to millennium) as well as smaller temporal scales (days to decades) are described. The iterative multidimensionality of the model makes clear new ways of seeing social issues and opens opportunities for policy solutions, resources and stakeholders to be brought to bear on the issues.

Historical racial injustices as well as more recent public and economic policies have culminated in the displacement of supermarkets from some central city neighborhoods. With this displacement, many low-income and minority neighborhoods not only have been deprived of affordable healthful food, but also have experienced prolonged exposure to energy-dense and highly processed snack foods. Partly as a consequence of this loss of supermarkets, diet-related diseases have become prevalent. Our current policies to improve this health issue address only objective measures of access, with little input from community residents, and they are having limited results. In response, I have reconceptualized access as a construct with five dimensions: acceptability, accessibility, accommodation, affordability, and availability. This new expanded view supports both objective and perceived aspects of access and values the knowledge of residents through community-based participatory research, thereby providing a more complete understanding of access.Keywords food access, race, five dimensions of access, grocery gap, health disparity, community-based participatory research, social determinants of health, food desert he increase in youth obesity rates and dietrelated diseases across age groups in lowincome and predominantly minority neighborhoods relative to middle-class White neighborhoods has received national attention of late

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This study extends the intercity rent differentials investigation by Gilderbloom and Appelbaum (1988) in relatively independent housing markets to see how it can be replicated using U.S. census data from the year 2000 against the 1970 and 1980 models with the addition of several new variables to measure its impact on intercity rents. We find that region, race, and climate no longer explain rent differentials in 2000 as it did in the 1980 research, while affirming that a large percentage of old houses and small mom-and-pop landlords causes rents to fall. We find that both the cost of homeownership and the level of household income remain critical factors in explaining the level of median rent across cities. We also find a strong correlation between cities with extensive anti-war activity in the late 1960s and same sex households having higher rents, although more research needs to be done before we argue a causal relationship. We contend that sociology needs to be put back into the equation in order to understand how rents vary from city to city. Our explanation of rent variations adds a social dimension that most other researches miss. We also show how the amount of explanatory power is increased significantly by adding in a sociological dimension.The factors that determine median rent levels across cities have been a topic of much debate and intense research in the literature on urban housing markets and urban public policy.

Community-based Participatory Research (CBPR) provides a methodology that creates mutually beneficial and equitable partnerships between researchers and community people involved in positive change. Participatory Action Research (PAR) is rooted in trust, connectivity, and reciprocity to address issues and actions that remedy inequitable social, economic, and environmental problems arising from racism rooted in structural/political imbalances. In this paper, we discuss the Health Equity Alliance of Tallahassee (HEAT) and its affiliated six week Ethnographic Field School that trains graduate students in CBPR methodology by bringing faculty, local community activists and stakeholders, and students together for mutual learning in dynamic classroom, community, and social settings. The paper offers reflections on the experience by a student, HEAT activist, local and visiting faculty, and demonstrate how a model field school based on PAR offers an empirical approach to building capacity to address power inequities in local settings and beyond.