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This study applied the Water Poverty Index (WPI) in border colonias of west Texas. The colonias are mostly unincorporated communities located primarily in New Mexico and Texas along the border with Mexico and are characterized by high poverty rates and sub-standard living conditions. In Texas, access to drinking water and sanitation services has been identified as one of the most significant determinants of health in over 350 colonias with about 50,000 residents. The WPI is a multidimensional measure that links household welfare with water availability which has been applied primarily in water poor countries. WPI components were identified and prioritized by a wide range of state stakeholders. This study demonstrated that the WPI can be an effective tool in integrating physical, social, economic and environmental information and in determining priorities associated with the water situation in wealthy countries with water poor communities such as colonias. These results highlight the need to classify the water necessities of colonias using a comprehensive but simple assessment tool that integrates several factors and is not based solely on infrastructure. They provide information that can be used by policy makers to provide assistance to Texas border communities with the greatest need.

Few studies have taken a conventional quantitative environmental justice approach to assessing the inequitable implications of climate change at a fine scale, such as across neighborhoods within an urban area. In this paper, we test the “environmental justice hypothesis” for climate change-related variables in the bi-national context of El Paso, Texas and Ciudad Juarez, Chihuahua using a matched set of social indicators from the 2000 US and Mexican censuses and biophysical data related to heat, ozone and flooding. T-test results demonstrated that social marginality and climate change-related hazard exposure were generally higher in Juarez as compared to El Paso. Using spatial regression models, we found patterns of environmental injustice in the sister cities related to these climate change-related hazards. Lower social class neighborhoods generally faced increased risks from extreme heat in both cities, and from floods and peak ozone in El Paso. In El Paso, children also faced significant and disproportionate exposure to peak ozone, while female-headed households were significantly more burdened by flooding and peak ozone in Juarez. Despite the limitations of this cross-sectional study, we can expect injustices to heighten as neighborhoods at-risk now become increasingly exposed under climate change scenarios. In sum, this analysis provides a model for investigating inequities associated with future small area impacts of climate change.

There are significant human impacts associated with climate change. This paper introduces a model for identifying small area risks associated with children’s vulnerability to climate change-related hazard exposures, which is transferable to other regions and adaptable to varied population and exposure scenarios. The cross-national El Paso-Ciudad Juarez (US-Mexico) metropolis serves as the study area for model implementation, which involves mapping social vulnerability, hazard exposure, and cumulative climate change-related risks. This study addresses two limitations of extant fine-scale climate change vulnerability mapping studies. First, rather than focusing on one exposure variable, it assesses the combined risks of multiple exposures (extreme heat, peak ozone, and floods) and, thus, offers a model for mapping neighborhood-level cumulative climate change exposure risks. Second, it provides a model for small area spatial analyses of climate change vulnerability within low-/middle-income countries and in contexts where climate change risks (and appropriate responses) are cross-national in scope.

Purpose To investigate the effects of use of water from irrigation canals to flood residential yards on the risk of West Nile disease in El Paso, Texas. Methods West Nile disease confirmed cases in 2009 through 2010 were compared with a random sample of 50 residents of the county according to access to and use of water from irrigation canals by subjects or their neighbors, as well as geo-referenced closest distance between their home address and the nearest irrigation canal. A windshield survey of 600 m around the study subjects’ home address recorded the presence of irrigation canals. The distance from the residence of 182 confirmed cases of West Nile disease reported in 2003 through 2010 to canals was compared with that of the centroids of 182 blocks selected at random. Results Cases were more likely than controls to report their neighbors flooded their yards with water from canals. Irrigation canals were more often observed in neighborhoods of cases than of controls. Using the set of addresses of 182 confirmed cases and 182 hypothetical controls the authors found a significant, inverse relation with risk of West Nile disease. Conclusions Flooding of yards with water from canals increased the risk of West Nile disease.

Retail food environments, which can be characterized by the availability of supermarkets and other food stores, provide an important context for dietary choices. Retail food environments in border metropolitan areas may not exhibit the same patterns of those observed in other areas and may influence dietary acculturation patterns. The availability of different types of food stores within a geographic information system (GIS) to test whether neighborhood deprivation and neighborhood acculturation were correlated with food store availability. After controlling for population density and neighborhood acculturation, high levels of neighborhood deprivation were associated with having 86% fewer chain supermarkets. In contrast, neighborhood acculturation was a more influential determinant in grocery and specialty store availability. Future research should examine the role of border retail food environments in shaping dietary acculturation patterns.

High levels of neighborhood deprivation and lack of access to supermarkets have been associated with increased risk of obesity in women. This multilevel study used a statewide dataset (n = 21,166) of low-income women in the Special Supplemental Nutrition Program for Women, Infants, and Children to determine whether the association between neighborhood deprivation and BMI is mediated by the availability of retail food stores, and whether this relationship varied across the urban rural continuum. Residence in a high deprivation neighborhood was associated with a 0.94 unit increase in BMI among women in metropolitan areas. The relationship between tract deprivation and BMI was not linear among women in micropolitan areas, and no association was observed in rural areas. The presence of supermarkets or other retail food stores did not mediate the association between deprivation and BMI among women residing in any of the study areas. These results suggest that level of urbanity influences the effect of neighborhood condition on BMI among low-income women, and that the availability of supermarkets and other food stores does not directly influence BMI among low-income populations.

Objective To examine disparities in park availability, features, and characteristics by income and the percentage of foreign-born population within a predominately-Hispanic border community. Methods This study occurred in 2010–2011 in El Paso, Texas. All census tracts (n = 112) were categorized as low, medium, or high income and percent foreign-born. The number of parks intersecting each tract was determined using ArcGIS and park features (facilities, amenities) and characteristics (aesthetic features, park and neighborhood quality/safety concerns) were assessed via park audits (n = 144). Analysis of variance and Kruskal–Wallis tests examined differences across income and percent foreign-born tertiles for all park measures. Results The medium income tertile had more parks than the high tertile, and more park facilities than the low or high tertiles, but no differences in park amenities were observed across income groups. As well, none of park availability, facilities, or amenities differed across percent foreign-born tertiles. Finally, parks in the high income tertile had significant fewer park and neighborhood quality/safety concerns and parks in the high percent foreign-born tertile had significantly greater park and neighborhood quality/safety concerns. Conclusion Identifying disparities in park availability, features, and characteristics can aid policymakers and citizens in improving the contribution of parks to community health for all.

Disparities in the prevalence of obesity have been linked to differential access to grocery stores and supermarkets. The availability of convenience, grocery stores, and supermarkets within the census tract and a 1-, 3-, and 5-mile radius of residence was measured for women enrolled in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) (n = 21 203) in Kansas. Disparities in the availability of supermarkets were faced by women living in rural counties; however, within more urbanized areas, the presence of racial, ethnic, and socioeconomic disparities differed based on whether store availability was measured within tract or within a 1-mile radius of residence. These results highlight the need for greater specificity when examining the relationship between food environments and dietary outcomes.

Although the overall population in the United States has experienced a dramatic increase in obesity in the past 25 years, ethnic/racial minorities, and socioeconomically disadvantaged populations have a greater prevalence of obesity, as compared to white, and/or economically advantaged populations. Disparities in obesity are unlikely to be predominantly due to individual psychosocial or biological differences, and they may reflect differences in the built or social environment. The retail food environment is a critical aspect of the built environment that can contribute to observed disparities. This paper reviews the literature on retail food environments in the United States and proposes interrelated hypotheses that geographic, racial, ethnic, and socioeconomic disparities in obesity within the United States are the result of disparities in the retail food environment. The findings of this literature review suggest that poor-quality retail food environments in disadvantaged areas, in conjunction with limited individual economic resources, contribute to increased risk of obesity within racial and ethnic minorities and socioeconomically disadvantaged populations.

Information collected from previous research studies can be used to address problems which were totally unrelated at the time the original research was planned and conducted. Evaluation of existing databases for extended uses can lead to valuable applications when used with modern computer-based modeling techniques. An example drawn from 1992 cereal rust survey and U.S. climatological data is presented to illustrate one type of application for databases from diverse sources. Cereal rust epidemiology data from several years of rust surveys can be blended with climatological data, cultivar distribution data, and rust loss information to develop a program to predict rust epidemics. These data from past years can also be used to determine the conditions which lead to cereal rust development and spread which contributed to subsequent losses in yield and quality. This information can then be used to develop a predictive model to provide agricultural industry managers and growers with advanced warnings of epidemics.

Socioecological theory and a growing body of research suggests that geographic, racial, ethnic, and socioeconomic disparities in the prevalence of obesity are linked to disparities in the availability of food retail outlets that provide healthy food options. We examined the availability of food stores for low-income women in Kansas and tested whether food store availability was associated with obesity using cross-sectional, geocoded data from women participating in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) (n = 21,166) in Kansas. The availability and density of food stores within a 1, 3, and 5 mile radius of residence was determined, and multivariate logistic regression was used to examine the association of food store availability with obesity. The availability of convenience, grocery stores, and supermarkets varied across the urban-rural continuum, but the majority of WIC recipients lived within a 1 mile radius of a small grocery store. WIC participants in micropolitan areas had the greatest availability of food stores within a 1 mile radius of residence. Availability and density of food stores was not associated with obesity in metropolitan and rural areas, but availability and density of any type of food store was associated with an increased risk of obesity among WIC recipients in micropolitan areas. These results suggest that limited spatial availability of grocery stores and supermarkets does not contribute to obesity risk among low-income WIC recipients in Kansas, and that urban influence moderates the contribution of food environments to obesity.

Although the overall population in the United States has experienced a dramatic increase in obesity in the past 25 years, ethnic/racial minorities, and socioeconomically disadvantaged populations have a greater prevalence of obesity, as compared to white, and/or economically advantaged populations. Disparities in obesity are unlikely to be predominantly due to individual psychosocial or biological differences, and they may reflect differences in the built or social environment. The retail food environment is a critical aspect of the built environment that can contribute to observed disparities. This paper reviews the literature on retail food environments in the United States and proposes interrelated hypotheses that geographic, racial, ethnic, and socioeconomic disparities in obesity within the United States are the result of disparities in the retail food environment. The findings of this literature review suggest that poor-quality retail food environments in disadvantaged areas, in conjunction with limited individual economic resources, contribute to increased risk of obesity within racial and ethnic minorities and socioeconomically disadvantaged populations.