Sustainable cities and human settlements

The United Nations Sustainable Development Goal (SDG) 11 aims to "Make cities and human settlements inclusive, safe, resilient, and sustainable." This goal acknowledges the growing importance of urban areas, as it's projected that by 2050, nearly 70% of the world's population will live in cities. Consequently, cities bear significant implications for sustainability, economic growth, and societal wellbeing.

Inclusivity is a key feature of sustainable cities. This refers to equitable access to opportunities, public services, and amenities, regardless of a person's background or circumstances. It implies the availability of affordable and adequate housing, thus addressing issues of homelessness and substandard living conditions.

Safety in cities means ensuring urban environments that protect their inhabitants from both physical harm and psychological distress. This involves addressing crime rates, traffic accidents, and potential hazards from poor infrastructure, while also considering the impacts of noise, pollution, and overcrowdedness on mental health.

Resilience is another important aspect, particularly in the face of climate change. Resilient cities can withstand and quickly recover from shocks such as natural disasters or economic crises. This involves aspects such as resilient infrastructure, disaster risk reduction strategies, and adaptive capacities at the community level.

Sustainability, finally, requires cities to function in a way that doesn't compromise future generations' ability to meet their own needs. This includes sustainable urban planning to reduce environmental impact, promote energy efficiency, and conserve resources. It also considers the importance of green spaces for biodiversity and the wellbeing of urban residents.

SDG 11 is interconnected with many other SDGs. For example, sustainable urban transport systems contribute to SDG 13 (Climate Action) by reducing greenhouse gas emissions. Meanwhile, ensuring access to green and public spaces supports SDG 3 (Good Health and Well-being).

Achieving sustainable cities and human settlements requires cooperation and participation from various stakeholders, including government authorities, urban planners, businesses, and citizens. Through their collective efforts, cities can be transformed into hubs of sustainability, resilience, and inclusivity, contributing significantly towards the realization of the SDGs.

Forced migration is not a recent phenomenon, nor is the reality of the amount suffering of the displaced population fleeing from armed conflict. Finding housing for refugees has not only become an acute obligation for hosting countries but it is a situation predicted to continue, and possibly increase, in the future. This study is discussing and showing the results of the first phase of an ongoing project for designing and constructing an eco-cycle refugee shelter.

Poor air quality has extremely detrimental health consequences, including cancer, stroke, asthma or heart disease. Existing research on air pollution-induced environmental injustice (EI) in Hong Kong (HK) is based on sparse air pollution data due to the limited number of pollution monitoring stations, rendering the study of the relationship between air pollution exposure and social deprivation (SD), and the subsequent study of EI at finer geographical scales difficult.
Environmental concerns arising from the over-dredging of sand have led to restrictions on its extraction across India, with direct economic impacts on concrete construction. A suitable environmentally friendly alternative to sand must be found to match the huge demand from the concrete construction industry. At the same time, waste plastic is rarely recycled in India, with as much as 40% left in landfill. The dumping of such materials which degrade at extremely low rates meaning they persist in the environment is a long-term environmental concern.
This book chapter advances SDGs 7, 11, and 13 by offering a promising alternative energy source. It reviews polymer-based solar cells, which are are light, flexible, affordable, sustainable, and now boast improved performance.
World Future Energy Summit is the world’s leading business event for future energy and sustainability, showcasing pioneering technologies and ground-breaking thinking in energy, energy efficiency, water, solar, waste, smart cities, climate and the environment. As a global hub for business, innovation and knowledge exchange, World Future Energy Summit inspires the advancement and transfer of ideas, technology and investment across borders and between the public and private sectors worldwide, helping stimulate sustainable growth for all.
Elsevier, Current Opinion in Green and Sustainable Chemistry, Volume 8, December 2017
From waste to wealth using green chemistry: The way to long term stability
Waste is an extremely valuable resource that we have been accumulating over a long period. Interesting and viable organic “waste-to-resource” opportunities include plastics and food supply chain wastes. Their use as chemical feedstocks will fit well with a circular economy model. Plastics is a major waste opportunity: worldwide we only recycle a few % of the plastic we use, yet plastic manufacturing consumes some 10% of all the oil we consume, and much of it causes serious environmental damage through negligent release.
The replacement of the fossil resources historically employed for chemicals’ production is of major scientific interest the last decades, as a result of the environmental issues arisen and the price versatility of petroleum. Biotechnological routes present promising alternatives for the production of various platform chemicals such as succinic, lactic and muconic acids among others. The utilisation of agricultural and agro-industrial waste and by-product streams would not only reduce the overall production cost but also it would assist towards the direction of the bio-economy era.
Global sustainability problems pose serious challenges for humanity. In handling these problems education for sustainable development (ESD) is seen as important. Different key competences that ESD should focus on have been introduced, such as the ability to deal with future dimensions. Still, studies indicate that future dimensions are not always included in ESD and that many young people are pessimistic concerning the global future. Therefore, one could argue that a focus on anticipatory emotions, especially hope, should be included in ESD.
Elsevier, Journal of Allergy and Clinical Immunology, Volume 140, November 2017
The tremendous increase in allergy in the African continent cannot simply be explained by the change in public hygiene. There are many “prehygiene” communities with sewage-contaminated water supplies, helminth infestations, bare footedness, and poor housing, and still there is a high prevalence of allergic disease. Africans can be exposed to many risk factors facilitating severe asthma and wheezing, including airborne viruses, smoke, indoor dampness, cockroaches, and poor access to health care.
A Global Outlook on Disaster Report 2017
Despite loss of life and economic devastation worldwide due to increasingly frequent natural and man-made disasters, scientific research on disasters represents a small percentage of scholarly output. Furthermore, countries with the highest death tolls from disasters tend to be low-income countries and have low-levels of scholarly output overall and in disaster science; countries with higher research output overall, as well as in disaster science, tend to be high-income countries and sustain the greatest economic losses from disasters. This report advances SDG 11 target 5, which is specifically concerned with disaster risk reduction.

Pages