Many cities of the world suffer from air pollution because of poor planning and design and heavy traffic in rapidly expanding urban environments. These conditions are exacerbated due to the Urban Heat Island (UHI) effect. While there have been studies linking the built environment and air pollution with health, they have ignored the aggravating role of UHI. The past urban planning literature in this field has also ignored the science of materials, vehicles and air pollution, and technological solutions for reducing cumulative health impacts of air pollution and UHI. Air Pollution, built environment and human health are complex discussion factors that involve several different fields. The built environment is linked with human health through opportunities of physical activity and air quality. Recent planning literature focuses on creating compact and walkable urban areas dotted with green infrastructure to promote physical activity and to reduce vehicle emission-related air pollution. Reduced car use leading to reduced air pollution and UHI is implied in the literature. The literature from technology fields speaks to the issue of air pollution directly. Zero emission cars, green infrastructure and building materials that absorb air pollutants and reduce UHI fall within this category. This paper identifies main themes in the two streams of urban air pollution and UHI that impact human health and presents a systematic review of the academic papers, policy documents, reports and features in print media published in the last 10–20 years.

Natural hazards are processes that serve as triggers for natural disasters. Natural hazards can be classified into six categories. Geophysical or geological hazards relate to movement in solid earth. Their examples include earthquakes and volcanic activity. Hydrological hazards relate to the movement of water and include floods, landslides, and wave action. Meteorological hazards are storms, extreme temperatures, and fog. Climatological hazards are increasingly related to climate change and include droughts and wildfires. Biological hazards are caused by exposure to living organisms and/or their toxic substances. The COVID-19 virus is an example of a biological hazard. Extraterrestrial hazards are caused by asteroids, meteoroids, and comets as they pass near earth or strike earth. In addition to local damage, they can change earth inter planetary conditions that can affect the Earth’s magnetosphere, ionosphere, and thermosphere. This entry presents an overview of origins, impacts, and management of natural disasters. It describes processes that have potential to cause natural disasters. It outlines a brief history of impacts of natural hazards on the human built environment and the common techniques adopted for natural disaster preparedness. It also lays out challenges in dealing with disasters caused by natural hazards and points to new directions in warding off the adverse impact of such disasters.

Transport-related social exclusion (TRSE) is a common problem across the globe. Despite TRSE has been identified to be a multifaceted concept, researchers often focus on a single dimension to identify individuals/groups facing exclusion, which leaves most of the at-risk groups unidentified – due to a lack of comprehensive empirical framework. This paper reports the development of a multidimensional framework through a review of the literature and based on a Delphi survey. A range of dimensions and indicators of TRSE were identified through the review. Their suitability was assessed by the experts through a two-round Delphi survey – involving 33 international experts. These experts reached a consensus that individuals are likely to face TRSE in physical, economic, temporal, spatial, psychological, and information dimensions, which can be measured by 15 key indicators consisting of 47 sub-indicators. The findings of this research serve as a guide for scholars and policymakers to understand what constitutes TRSE and act accordingly.

This study analyses short- and long-term adaptation strategies for the tourism sector in Vietnam’s Mekong Delta that arose out of empirical research. The study evaluates the adaptation approach for government authorities, businesses, and tourists to manage climate change-related threats of rising temperature, irregular rainfall, sea-level rise, severe storms, and increasing salinity. In addition, the study points out the main responsibilities for realizing climate change adaptation in the tourism sector. The study figures that there are some differences between government authorities, businesses and tourists’ perspectives on recommended approaches to adapt to climate change. However, current strategies are very short-term and operate at the individual institutional level.

Sydney, the capital of the Australian state of New South Wales, is geographically divided by socio-economic conditions and urban opportunities. However, the division in Sydney has not been investigated from an urban planning perspective. This research hypothesises that the urban planning system and its practice-produced consequences promote inequalities in Sydney. This study conceptualises Sydney’s urban inequality in the context of critical concepts of neoliberalism, the theory of power, and the right to the city. Based on semi-structured interviews, secondary documents, and data analysis, this research claims that residents of lower socio-economic areas lag behind compared to others. The paper emphasises the significance of a just city and strong community engagement to reduce the disparate urban policy practices that influence urban divides in Sydney.

Cities were once thought to be crucibles of secularisation, where the retreat from religion and its expression would be most pronounced. This decline in faith was linked to the heightened levels of heterogeneity and cosmopolitanism within cities. However, there is recent evidence of both the continuation and of the recession of the secularisation process in contemporary Western societies, with the mix and pace of these trends being quite unique to different countries. Significantly, this combination of processes has been argued to be part of a ‘post-secularist’ paradigm. Drawing on census data, this paper examines the spatial patterns of religious affiliation and non-belief in the Australian city of Sydney. Sydney has divergent geographies of faith and non-faith indicating the spatial multiplicities of religious belief. The decrease in Christianity in some areas of the city has been matched by an increase in non-Christian faiths, while in other areas there has been little change. Some parts of the city—especially those areas with a strong mix of affluence, diversity and cosmopolitanism—betray the strongest levels of secularisation and the retreat of faith. At least five geographies of faith and non-belief are recognisable within Sydney. While post-secularisation has been recognised as internationally uneven, this research demonstrates that it is also uneven across a world city like Sydney. The Sydney variations in (de)secularisation reflect city-based effects, including the historic and contemporary patterns of immigrant settlement, established and emerging religious communities, the segmented geographies of class and affluence, and the development of zones of cosmopolitanism. The findings point to the need for further research on the micro-geographies of religious belief and non-belief and community relations, and the on links between religious communities and civil society.