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Purpose of Review: This paper offers research frameworks for understanding and acting to address urban environmental justice. Urban neighborhoods tend to concentrate and colocate vulnerable people and toxic environments. Cities are also where the poor and people of color tend to be disproportionately exposed to environmental hazards, such as air pollution, lead in paint and water, and polluting industries., Recent Findings: Researchers and government agencies are increasingly recognizing the need to document cumulative exposures that the urban poor and people of color experience in addition to environmental hazards. These "toxic stressors" can exacerbate the health impacts of pollution exposures and include such social and economic factors as discrimination, racism, linguistic isolation, and political exclusion. Urban environmental justice research can benefit from a structural racism approach, which requires documenting the historical decisions, institutions, and policies that contribute to today's cumulative exposures. Key research frameworks and methods utilizing this approach for urban environmental justice include community-based participatory research, measuring cumulative stressors, and community-based asset and hazard mapping.

Urban places and health equity are two of the most challenging concepts for 21st century environmental health. More people live in cities than at any other time in human history and health inequities are increasing. Health inequities are avoidable differences in the social, environmental and political conditions that shape morbidity and mortality, and disproportionately burden the poor, racial, ethnic and religious minorities and migrants. By linking urban place and health inequities, research and action brings into sharp relief the challenges of achieving urban environmental justice. This article briefly reviews the complex definitions of urban places and how they can shape health equity in cities. I suggest that a more relational or integrated approach to defining urban places and acting on health equity can complement other approaches and improve the ability of public health to meet 21st century challenges. I close with suggestions for research and practice that might focus environmental public health on healthy urban place making. The practices include community driven map making, Health in All Policies (HiAP), promoting urban ecosystem services for health, and participatory and integrated approaches to urban slum upgrading. I conclude that if the global community is serious about the sustainable development goals (SDGs), greater attention must be paid to understanding and acting to improve urban places, living conditions and the social and economic conditions that can promote health equity.

In April, 2014, the City of Richmond, California, became one of the first and only municipalities in the USA to adopt a Health in All Policies (HiAP) ordinance and strategy. HiAP is increasingly recognized as an important method for ensuring policy making outside the health sector addresses the determinants of health and social equity. A central challenge facing HiAP is how to integrate community knowledge and health equity considerations into the agendas of policymakers who have not previously considered health as their responsibility or view the value of such an approach. In Richmond, the HiAP strategy has an explicit focus on equity and guides city services from budgeting to built and social environment programs. We describe the evolution of Richmond's HiAP strategy and its content. We highlight how this urban HiAP was the result of the coproduction of science policy. Coproduction includes participatory processes where different public stakeholders, scientific experts, and government sector leaders come together to jointly generate policy goals, health equity metrics, and policy drafting and implementation strategies. We conclude with some insights for how city governments might consider HiAP as an approach to achieve "targeted universalism," or the idea that general population health goals can be achieved by targeting actions and improvements for specific vulnerable groups and places.

Asthma is now the leading cause of emergency room visits, hospitalizations, and missed school days in New York City's poorest neighbourhoods. While most research focuses on the influence of the indoor environment on asthma, this study examines the neighbourhood effects on childhood asthma, such as housing and ambient environmental hazards. Using Geographic Information Science (GI Science) we identify neighbourhoods with elevated concentrations of childhood asthma hospitalizations between 1997 and 2000 in US census tracts, analyze the sociodemographic, housing characteristics, and air pollution burdens from stationary, land use and mobile sources in these areas. The paper reveals the importance of distinguishing the specific and often different combinations of poor housing conditions, outdoor air pollution and noxious land uses that contribute to the high incidence of asthma in impoverished urban neighbourhoods.