Climate-Induced Migration and Resilient Cities: a New Urban Agenda for Sustainable Development1

The study aims at examining how climate-induced migration can contribute to the sustainable development of cities. Through the deductive approach, the linkages between climate change and human mobility are initially analyzed. Thereafter, it investigates how urban centers deal with such phenomena. It then looks into the Agenda 2030, with a special focus on the SDG 11. Despite the attempt to make cities and human settlements inclusive, safe, resilient and sustainable, this SDG does not take into account the role played by climateinduced migrants in urbanized areas. In view of this, the New Urban Agenda (UN-HABITAT) is explored: it recognizes that migrants can bring significant social, economic and cultural contributions to urban life.


Introduction
Forced migration has intensified due to the impacts of climate change over the past decades. Sea-level rise, droughts and desertification processes, as well as the higher incidence of extreme weather-events, are leading to the internal and/or cross-border displacement of people towards urban areas. This challenges the governance of several developing countries.
Considering that the global urban population increased from 746 million to 7.6 billion between 1950 and 2017, and given the estimate that a further 03 billion people will live in urbanized areas by 2050, cities try to cope with disorderly growth in a sustainable manner.
As urban centers can promote the inclusion of climate-induced migrants through policymaking, this study aims at examining how human mobility in the context of climate change can contribute to the sustainable development of cities.
Through the deductive method, the linkages between climate change and human mobility, as well as the outlines that allow the identification of people compelled to move due to environmental reasons, are initially analyzed. Thereafter, the impacts of global warming in urban areas are investigated: while cities are responsible for greenhouse gas (GHG) emissions into the atmosphere, they also become increasingly susceptible and unable to manage their consequences.
It then looks into the 2030 Agenda for Sustainable Development, with a special focus on the Sustainable Development Goal 11 (SDG 11). Despite the attempt to make cities and human settlements inclusive, safe, resilient and sustainable, this SDG does not take into account the role played by environmental migrants in urbanized areas. New approaches discussing the needs of this group of individuals are thus suggested.
In view of this, the New Urban Agenda, established by the United Nations Human Settlements Programme (UN-HABITAT), is explored. Although migration processes towards cities reveal a plethora of obstacles, it is recognized that migrants can bring significant social, economic and cultural contributions to urban life. Seqüência (Florianópolis), n. 83, p. 10-46, dez. 2019 Climate-Induced Migration and Resilient Cities: a New Urban Agenda for Sustainable Development

The Intensification of Migration Patterns due to Climate Change
Issues surrounding climate change have proven to be among the most hotly debated of this century. This phenomenon accelerated due to the unrestrained emission of greenhouse gases (GHGs) into the atmosphere by anthropogenic activities in pursuit of economic growth 2 . From this perspective, Leal-Arcas 3 highlights that the warming of the earth's surface is seen as a threat not only to humanity, but also to environmental sustainability.
The Fifth Assessment Report (AR5) of the Intergovernmental Panel on Climate Change (IPCC) attests that human activities have changed and continue to change the Earth's surface and atmospheric composition 4 . It is thus contended that man's interference with the environment has brought about the increase in average global temperatures between 1951 and 2010, with GHG emissions being the main driver behind the earth's surface temperature increasing between 0.5º C and 1.3º C in this period. Moreover, the average annual terrestrial warming recorded in the twentieth century has led, notably, to a reversal in the long term cooling trend in the northern hemisphere over the last 5000 years. In other words, regarding the annual average temperatures in the northern hemisphere, 1983-2012 were most likely the 30 hottest years of the last 1400 years 5 .
The overloading caused by steadily increasing air pollution has intensified environmental impacts, raising problems for the international community, such as the need to regulate the situation of those forced to migrate as a result of the effects of climate change.
Human mobility due to environmental misfortunes is not without precedent in the history of humanity. The devastation of the environment and the incidence of natural disasters, and associated poverty, water secutiry, food and other social conflicts, have always posed a threat to the survival of mankind, leading to the migration of several human settlements 6 . Myers 7 notes that the total number of people displaced by environmental degradation globally in 1995 amounted to at least 25 million people, while "traditional" 8 refugees totaled no more than 27 million individuals in the same year. The author also points out that the situation of those forced to migrate because of environmental disasters may [...] become one of the foremost human crises of our times. This far they have been viewed as a peripheral concern, a kind of aberration from the normal order of things. In the world of the future, they are likely to become a prominent feature of our One Earth landscape. The phenomenon is an outward manifestation of profound change -a manifestation often marked by extreme deprivation, fear and despair 9 .
With regard to climate change, it is estimated that the number of people relocated to escape from sea-level rise, drought and desertification, as well as from extreme weather events, will rise from 200-250 million to possibly 1 billion people by the middle of the 21 st century 10 . The International Organization for Migration (IOM) projected that between 100 and 200 million people will leave their homes to seek shelter in other locations due to climate change by 2100 11 . Still, the United Nations Environment Programme (UN Environment) anticipates that "a total of 4.5 billion hectares around the world -fully 35 percent of the Earth's land surface -are in various stages of desertification. These areas are home to more than 850 million people" 12 13 .
According to the Internal Displacement Monitoring Centre (IDMC), the number of natural disasters related to climate change has more than doubled over the past two decades. In addition to that, an annual average of 26.4 million people were forced to move within their national borders as a result of such phenomena between 2008 and 2017. In 2017 alone, 18.8 million new individuals became internally displaced in 135 countries: "weather-related hazards triggered the vast majority, with floods accounting for 8.6 million and storms, 7.5 million. China, Philippines, Cuba and the United States were the worst affected" 14 .
Notwithstanding that the 1951 Convention Relating to the Status of Refugees listed circumstances giving rise to refugee status, such as race, religion, nationality, membership of a social group and political opinion, it may be argued that this definition should not be deemed to cover every situation that could be included in the definition of refuge. Scientific development ever since has resulted not only more armed conflicts but also socioenvironmental deterioration, with poverty, unemployment 12 JACOBSON, J. L. Environmental Refugees: a yardstick of habitability. Worldwatch Paper 86. Washington, D.C.: Worldwatch Paper 86, 1998. p. 10. 13 It should be emphasized that the forecasts presented do not have a methodological, to be used as well as the period and distance of displacement to be taken into account are questioned. Indeed, such forecasts are generally based only on the number of individuals living in risk areas, without taking into account the multiplicity of factors that lead to migration. In: IONESCO, D.; MOKHNACHEVA, D.; GEMENE, F. The Atlas of environmental migration. London and New York: Routledge -Taylor and Francis Group, 2017. p. 14. 14 INTERNAL DISPLACEMENT MONITORING CENTRE (IDMC). GRID 2018: Global Report on Internal Displacement. Switzerland: Norwegian Refugee Council (NRC) and Internal Displacement Monitoring Centre (IDMC), 2018. p. v. and the increasing destruction of nature, which have caused people displacement 15 .
The current concept of refuge is the product of a long historical process that, despite having enabled the legal protection of persecuted persons, did not provide opportunities for those needing shelter in the new political, economic, social and environmental order over the last decades 16 .
The infeasibility of including those forced to move due to climate change disasters within the traditional refugee concept stems from the difficulty in classifying environmental devastation as persecution, as well as fitting the concept into one of the legal reasons for the concession of refuge 17 . In short, persecution is restricted to the grounds listed in the law, which, for their part, must also revolve around a well-founded fear. In view of this, "climate change, degradation and natural disasters [...] are reasons that can also drive thousands of people out of the place -or even the country -they live in" 18 .
The first outlines in the conceptualization of this category of people emerged from the attempt to broaden this definition in the 1980s. 15 [...] people who have been forced to leave their traditional habitat, temporarily or permanently, because of a marked environmental disruption (natural and/or triggered by people) that jeopardized their existence and/or seriously the quality of their life". Three years later, Jodi Jacobson adopted the following designation for environmental refugees: "[...] those displaced temporarily due to local disruption such as an avalanche or earthquake; those who migrate because environmental degradation has undermined their livelihood or poses unacceptable risks to health and those who resettle because land degradation has resulted Yet, Norman Myers proposed the following concept in 1995: "Environmental refuges are persons who can no longer gain a secure livelihood in their traditional homelands because soil erosion, water shortages and climate changes, also natural disasters such as cyclones, no alternative but to seek sustenance elsewhere, whether within their own countries or beyond and whether on a semi-permanent or permanent basis". In: SERRAGLIO, D. A. A proteção dos refugiados ambientais pelo direito internacional: uma análise a partir da teoria da sociedade de risco Dissertação (Mestrado) -Pontifícia Universidade Católica do Paraná, Curitiba, 2014. p. 78-80. 20 environmental migrants as "persons or groups of persons who, for compelling reasons of sudden or progressive change in the environment that adversely to do so, either temporarily or permanently, and who move either within their country or abroad." In: IOM, 2009, p. 19. 21 According to the Appel of Limoges, drafted and published in 2005 by the Frenchman Michel Prieur, so-called environmentally displaced persons are "... individuals, families and communities facing an acute or gradual rupture of their natural environment, inevitably situation, to leave their usual places of residence, leading them to relocate or settlement EN DROIT DE L'ENVIRONNEMENT ET L'URBANISME -CRIDEAU. Migratory processes do not derive solely from geophysical activities 23 , but also from misfortunes driven by the development of human practices. In addition to climate change, other environmental causes lead to the forced migration of people, such as scarcity of natural resources, processes that degenerate the environment (and may provoke armed conflicts, as a result), as well as accidents resulting from activities linked to energy production development projects. 24 While climate change intensifies the vulnerability of people compelled to leave their places of origin, it is not necessarily the sole cause per se. The phenomenon is more of a trigger or catalyst amid an explosive plethora of economic, social, political and/or cultural factors. 25 As such, the motivations that provoke human mobility are both interdependent and mutually aggravating: where these other factors occur cumulatively, or concurrently, climate change is like a spark on the tinder of already existing humanitarian crises.
Those known as climate-induced migrants may or may not be moving voluntarily. Inititally, voluntary migration arises from the free will of the individual, while involuntary or forced migration involves being compelled to leave the place of residence, or even the country of origin 26 . In practice, however, this becomes a fine distinction, which, 22 RAMOS, 2015, p. 739. 23 of the physical characteristics of the Earth, as opposed to climatic or meteorological conditions. Geophysical disasters -earthquakes, landslides, tsunamis and volcanic eruptions -are thus not directly related to the climate, contrary to a very common belief expressed in public debates". In: IONESCO; MOKHNACHEVA; GEMENE, 2017, p. 38. 24  in turn, hinders the formulation and implementation of the appropriate policies. Commonly, the possibility of having a choice varies according to the individual degree of vulnerability and exposure to the factors mentioned above in conjunction with three main mobility factors -the need, the desire and the ability to migrate 27 . When extreme weather events or measurable sea level rise is present, as examples, it becomes difficult to say that the decision to leave a place of threats to a safer place is voluntary.
Climate-induced migrants may be temporary or permanent and they do not need to cross international borders: it suffices that the individual is compelled to leave his place of habitual residence. As such, it is neither distinguishable nor relevant whether the individual or group has actually crossed an international border 28 .
Most climate-induced migrants do not leave their country of origin: they intend to return "home" as soon as possible 29 . Based on this, there some consensus that those displaced by natural disasters remain within their own borders. In contrast to refugees, the number of individuals crossing the borders of their usual place of residence as a result of environmental disasters is much lower than the number of those internally displaced 30 . While statistics from internally displaced persons 27 It is important to highlight that when people feel the need and the desire to migrate but are unable to do so, they become trapped. This is most often the case for individuals who are already very vulnerable. In these cases, environmental stress functions as an aggravating factor that adds to the systemic economic, demographic and political factors need to move. In: IONESCO; MOKHNACHEVA; GEMENE, 2017, p. 28. 28  Official statistical data confirms this trend: in its 2008 Global Trends report, the United Nations High Commissioner for Refugees (UNHCR) counted 42 million forcibly displaced people, of which 15.2 million are refugees, 827,000 asylum seekers and 26 million internally displaced 32 .
Given that these movements usually occur from rural to urban centers, debates on the impact of migratory flows and the resulting social, economic, political and cultural dynamics of migrants in cities has begun to gain in prominence. Although (im)migration is a cornerstone of urbanization, when this happens too quickly or without adequate planning, migration is seen as contributing to social instability, shortages of housing, infrastructure and services, as well as causing tensions with the host communities.

The Impacts of Climate Change and the Receiving of Climateinduced Migrants in Urban Areas
Migration is markedly urban: the majority of migrants and displaced populations move to urban areas and countries are now simultaneously countries of origin, transit and destination 33 . Currently, more than half not crossed an internationally recognized State border". In: UNITED NATIONS HIGH COMMISSIONER FOR REFUGEES (UNHCR the world's population -3.6 billion people -lives in urban centers 34 . By 2050, population increase, associated with a high urbanization rate 35 , will boost the number of inhabitants in urban centers from 5.6 to 7.1 billion, comprising 69% of the total global population 36 . As a result, it is not surprising that urban areas account for about 70% of economic activity, 70% of all solid waste produced, 60% of all available energy and 40% of GHG emissions 37 .
Cities are both victims and perpetrators of climate change 38 . By attracting individuals in search of job opportunities, professional qualifications and access to goods and services, urban areas end up intensifying GHG emissions into the atmosphere. The growing demand for infrastructure and transport systems requires high energy consumption, affecting the air quality, water availability, land use and waste management 39 . 34 Urban areas are those that have a high population density and built-up features in comparison to the surrounding areas. The term can also apply to industrial zones and related infrastructure, as well as to cities and towns. In: AVIS, W. R. Urban Governance. Birmingham, UK: GSDRC, University of Birmingham, 2016. p. 03. 35 In this context, 512 cities had at least 1 million inhabitants in 2016. By 2030, this number will grow to 662. 10 additional megacities with more than 10 million inhabitants are projected to emerge by then, bringing the total number to 41. In: UN HABITAT. Sustainable urbanization in the Paris Agreement: Comparative review of Nationally Determined Contributions for urban content. Nairobi: UN HABITAT, 2017. p. 03. 36 The global urban population surpassed the rural population in 2007: while only 30% of the population was urban in 1950, this percentage had reached 54% by 2014. The IPCC points out that two-thirds of the entire world population will reside in urban centers by 2050. This expansion will occur mainly in developing countries that do not have the necessary infrastructure to support this growth without social and environmental impacts.  Serraglio -Heline Sivini Ferreira -Nicholas A. Robinson At the same time, cities become susceptible to and unable to cope with the impacts of climate change, exposing millions of inhabitants, mostly residing in informal settlements or belonging to vulnerable groups, to various environmental disasters. It is expected that the increase in the number of heatwaves and urban heat islands, more frequent and intense droughts, rains with consequent flooding and rising sea level in coastal areas 40 will jeopardize not only the water supply and treatment of sewage but also the local energy, transport and public health systems 41 .
Humanity has always had to cope with problems arising from the instability of its surroundings, such as environmental disasters affecting urban infrastructure: "it would be inaccurate to attribute all these problems exclusively to climate change. However, extreme weather events certainly tending to get worse and more frequent." 42 According to the IPCC, climatic variations will undermine the full spectrum of urban functions, infrastructure, services and buildings. The vulnerability of these systems to such phenomena depends on the degree of development, resilience and adaptability 43 . As a result, climate change tends to exacerbate existing pressures, especially in developing countries, "where a large proportion of the population lacks basic sanitation services, where urban road traffic is chaotic and where energy security is constantly under discussion" 44 .
While extreme drought-related events influence the quantity and quality of water resources for city supplies, changes in rainfall patterns 40 It is noteworthy that most major urban centers are in coastal areas: although they represent only 2% of the planet's land surface, they account for 13% of the world population, with Asia being the continent with the highest concentration of people in risk areas. In: XXV PRÊMIO JOVEM CIENTISTA. Impactos da mudanças climáticas nas cidades: Capítulo 07 -Caderno do Professor. have more widespread effects, with exposed solid waste in the urban environment obstructing outlets and causing flooding as a result 45 . For its turn, the energy sector is affected not only by energy resources and transformation, but also by the transport, supply and consumption of energy. Still, transportation systems become vulnerable to weather and climate conditions, thus hampering human mobility and quality of life, as well as impeding economic growth 46 .
Public health is directly and indirectly affected. Indirect changes occur in basic aspects of human health, such as water, air and food, when the cycle of life is altered affecting the migration and the distribution of insects as disease vectors and, thus, urban populations are impacted by the dispersal of infectious agents. Direct changes, such as heat waves, extreme temperatures and other weather events, affect human physiology and generate physical trauma, even death 47 .
If the challenges faced by large urban centers due to climate change were not enough already, accelerated urbanization to accomodate climateinduced migrants presents further problems. Individual vulnerability 48 leads to unprecedented socio-environmental crises, affecting not only social and economic well being but also encroaching on the human rights of newcomers 49 . Migration is usually seen as contributing to shortages in housing, infrastructure, jobs, education and other social services, causing tensions with host communities 50 : 45  […] rapid urbanization, accelerating demand for housing, resource supplies and social and health services, place pressure on already stretched physical, social and regulatory infrastructure, heightening risks and vulnerability.
[…] Additional migration to cities is likely to exacerbate pre-existing vulnerabilities related to inequality, poverty, indigence and informality (informal work and settlements), and worsen the situation of those exposed to environmental risk factors. This places further stress on the ability of cities to adapt to climate change 51 .
The economy of cities cannot accommodate new influxes of workers residing in urban settlements. Earning an income through informal employment becomes ways that enable entire families and populations to subsist 52 . Informal urban settlements, known as slums, arise near existing cities and are characterized by residential areas where any guarantee of land use and possession, or even security of living there, is non-existent. Generally, these are regions with housing constructed without municipal planning authorization in risk areas, which limits access to goods and services and basic infrastructures. The spread of these areas is a phenomenon that accompanies urban growth: it is estimated that 25% of the world's urban population resides in informal settlements, with 213 million new settlers since 1990 53 .
Informal employment, in turn, is designated as activities without "strings attached" and/or without proper regulation by government agencies, possibly without benefits such as fixed remuneration, paid leave and social security. As a result, no taxes are collected to support social or public health services. Those in the informal economy face multiple difficulties -undervalued, overworked, often in unhealthy or even unsafe conditions, and underpaid 54 . As most climate-induced migrants in developing countries move internally to urban centers characterized by poor governance and precarious basic services, many are eventually excluded, thus increasing social tensions and rates of violence 55 .
For sustainable development to cope with these phenomena, there will need to be reforms of programs and services aimed at improving the quality of life of an urban population facing the effects of climate change and the increasing influx of climate-induced migrants. Establishing efficient administrations would enable cities to function and develop sustainably, as well as safeguard the fundamental guarantees to all who reside in them. In other words, [...] planning has the potential to play a transformational role in improving the quality of life of urban communities and tackling poverty.
[…] Governance determines the legal and administrative processes that underpin planning, as well as the roles of formal and informal actors who shape urban change. In many developing countries, effective formal planning is challenge because of a lack of up-to-date mapping, weak development control and enforcement powers, out-of-date planning processes; and limited public knowledge of or compliance with land use regulation. As a result, cities often develop in non-inclusive ways 56 .
The Sustainable Development Goals (SDGs) take on a new relevance in this context, as shown below. Of these Goals, SDG 11 -To make cities and human settlements inclusive, safe, resilient and sustainable should be highlighted. The specific targets related to SDG 11 aim at the access to safe, adequate and affordable housing; the access to transport systems and improved road safety; inclusive and sustainable urbanization; the safeguarding of global cultural and natural heritage; reducing the number of disaster-related deaths and people affected; reducing the negative environmental impact per capita of cities; as well as universal access to accessible and green public spaces 60 .

SDG GOAL 11 MONITORING FRAMEWORK:
A guide to assist national and local governments to monitor and report on SDG Goal 11 indicators. Nairobi: UN-HABITAT, 2016, p. 03. 59 SDGs involve diverse themes: poverty eradication, food security and agriculture, health, education, gender equality, inequality reduction, energy, water and sanitation, sustainable patterns of production and consumption, protection and sustainable use of oceans and terrestrial ecosystems, inclusive economic growth, infrastructure and industrialization, governance and means of implementation, as well as climate change and sustainable cities. This SDG works with the concept of resilient cities: urban aereas prepared for current and future adversities, in such a way as to limit the magnitude and severity of environmental misfortunes. As soon as these occur, they are able to respond quickly, equitable and efficiently 61 . Put another way, "a resilient city describes the capacity of cities to function, where the people who live and work in cities, particularly the poor and vulnerable, survive and thrive, no matter what the stress or shocks they encounter" 62 .
This requires the organization of services and infrastructure to support all sectors of the urban population. Cities must share information about who is exposed and who is vulnerable. Sustainable urbanization requires a competent, inclusive and transparent local government, as well as the empowerment of citizens to participate, decide and plan their city with the local authorities 63 .
Urbanization processes can make a significant contribution to the economic, cultural and social development of cities when well administeres. A higher population density enables governments to deliver essential infrastructure and services more easily in urban areas at a relatively low cost per capita. Livable and sustainable cities have a knockon effect in terms of providing rural populations with greater access to services such as education and healthcare, while also empowering them economically 64 . Therefore, it can help the "world to overcome some of its major global challenges, including poverty, inequality, environmental degradation, climate change, fragility and conflict, which are all critical elements of the 2030 Agenda" 65 .  Serraglio -Heline Sivini Ferreira -Nicholas A. Robinson By endorsing an objective that specifically addresses cities, international community has recognized urbanization process and urban centers as transforming forces for sustainable development. Although the SDG 11 does not refer to the role-played and the contributions made by climate-induced migrants to this process, paragraph 29 of Agenda 2030 states:

THE WORLD BANK GROUP. Guia de Adaptação à Mudança Climática nas
We recognize the positive contributions of migrants for inclusive growth and sustainable development. We also recognize that international migration is a multi-dimensional reality of major relevance for the development of countries of origin, transit and destination, which requires coherent and comprehensive responses. We will cooperate internationally to ensure safe, orderly and regular migration involving full respect for human rights and the humane treatment of migrants regardless of migration status, of refugees and of displaced persons 66 .
Additionally, SDG 10 -Reduce inequality within and among countries is relevant. It highlights the need to facilitate the orderly, safe, regular and responsible human migration and mobility, including by implementing well planned and managed policies 67 .
Urbanization and migration are clearly related since urban growth processes always involve the influx of new inhabitants. Beyond population changes due to variations in fertility and mortality rates, population of urban areas around the world are often affected by climate migratory movements: within and between countries, between rural and urban areas, and between different world regions 68  of climate-induced migration, many cities and local governments fail to consider this factor when planning urban development. Migrants are generally overlooked in discourses on urbanization and urban governance 69 or viewed as a problem rather than a potential asset. This shall be examined below.

The Recognition and Relevance of Climate-induced Migration in Urban Areas
While climate-induced migration into urban areas is one of the challenges of the 21 st century, this category of people is neglected in discourses related to urbanization processes. Deprived of adequate protection mechanisms, these inhabitants can be excluded or become invisible to society: "the generic urbanization model over the past decades has fostered segregation over integration" 70 .
In addition to accentuating homelessness and limiting access to goods and services, climate-induced migration can cause tensions in local communities, and be seen as a threat, synonymous of social instability and/or crisis by the target destinations 71 . Rather than highlighting the benefits of climate-induced migrants in urban life, contemporary society has traditionally sought ways to hamper their access to urban centers 72 . To advance sustainable development, the dynamics of population flows provide opportunities for the implementation of the SDGs 73 : translation of population dynamics, markets and services, among other factors. Cities emerge from and develop through processes of migration and concentration. Newcomers -whether from other cities within and beyond national border or from rural areascontribute to the increasing diversity and complexity of interactions in cities 74 .
The arrival of new inhabitants, notwithstanding their vulnerable status, offers social, economic and cultural advantages to urban centers through their contribution to reducing poverty and improving human development -if their arrival is well managed. Migration processes boost labor market 75 , generate new demands for goods and services, promote income generation 76 and increase tax revenues 77 . Climate-induced migrants stimulate economic growth and employment, also acting as a powerful source for innovation and experience that can reduce the impacts of natural hazards and foster adaptation 78 .
Several cities have thus been working to promote the reception of climate-induced migrants, seeking ways to provide them with access to basic services and to include them in the urban network without violating fundamental guarantees. These efforts offer the "potential to transform the discourse and politics of migration by recognizing the rich social, cultural 74 UNESCO, 2016, p. 21. 75 In countries with aging populations, migrants provide a workforce and thus foster the economy. Over the next 15 years, the majority of the world's countries will experience a decline in their workforces, requiring the arrival of new people. As an example, the working age population (22 to 66 years old) of Germany is predicted to decline by almost a quarter (about 13 million people) between 2013 and 2040. In: UNESCO, 2016, p. 15. 76 Climate-induced migrants can also contribute to their communities of origin through transfer of remittances (transfer of money by a foreign worker to an individual in their home country). The money sent home by migrants competes with international aid as one approach U$ 500 billion. In: UNFPA, 2013. p. 04. 77  Diogo Andreola Serraglio -Heline Sivini Ferreira -Nicholas A. Robinson to date, address poverty, identify and address new and emerging challenges are noteworthy 82 .
HABITAT III was the first UN global event after the adoption of the 2030 Agenda its SDGs and it offered "a unique opportunity to discuss the important challenge of how cities, towns and villages are planned and managed in order to fulfill their roles as drivers of sustainable development and, hence, shape the implementation of new global development and climate change goals" 83 .
The New Urban Agenda was developed as a result, providing guidance on issues such as urban planning and design and the legal frameworks to enhance positive outcomes of urbanization 84 . Besides being universal in scope, participatory and people-centred, it acknowledges the protection of the planet and and has a long-term vision, setting out priorities and actions at the global, regional, national, subnational and local level that policy makers can adopt based on their needs 85 .
The Agenda was built on the right to adequate housing as a component of the right to an adequate standard of living; universal access to safe and affordable drinking water and sanitation; equal access for all to public goods and quality services, such as food security and nutrition, health, education, infrastructure, mobility and transportation, energy, air quality and livelihoods; participatory, civic engagement and social cohesion and inclusion; disaster-risk reduction; inclusive and sustainable economic growth; and, finally, on the protection, conservation, restoration and promotion of ecosystems and biodiversity 86 . Despite its non-binding nature and the lack of monitoring mechanisms 87 , the document emphasizes the respect for the humane treatment of migrants through support for the cities that host them, in a spirit of international cooperation. While recognizing that migration to urban areas is fraught with complications, the New Urban Agenda recognizes this can still provide significant social, economic and cultural contributions to urban life. It also reinforces the relevance of local authorities in developing structures that strengthen urban-rural links and safe, orderly and regular migration processes through previously stipulated migration policies 88 .
The New Urban Agenda thus aims to meet the needs of climateinduced migrants in urban areas by adopting an inclusive urbanization model that takes into account the entire migration process -not merely the problems encountered at the final destination but also at place of origin and during transit. This way, it becomes possible to uphold human dignity "while building on their capacity and responding to humanitarian and development concerns in synergy" 89 . Regarding its preeminent commitment to inclusion, Heterogeneity is the lifeblood of cities. Cities attract different people and must also embrace diversity, create a safe speace for it and make inclusion their mantra. When they succeed in doing so, cities are preeminent places for the enjoyment of equal rights and opportunities, as well as their fundamental freedoms, guided by the purposes and principles of the Charter of the United Nations 90 .  UN-HABITAT, 2017. 91 Human rights principles and standards of a broader scope that apply to migrants are contained in the following fundamental human rights conventions: the International who migrate regardless of their status: "a human rights-based approach to the city entails multi-stakeholder cooperation guided by principles of democracy, participation, responsible leadership, transparency, accountability, non-discrimination, empowerment and the rule of law" 92 .
The right to the city was also considered. A shared vision of a city for all, involving "the equitable use of cities according to principles of sustainability, democracy, equity and social justice", would facilitate the inclusion of those who inhabit it, whether present or future generations, without discrimination. The right entails the development of fair, equitable, healthy, accessible, resilient and sustainable urban centers and human settlements to foster prosperity and quality of life for all 93 .
Referring to the right to the city, the New Urban Agenda includes a comprehensive view of the territory, respect for human rights and gender equality, the social function of the land and capture of the value generated by urban development, the guarantee of the involvement of citizens and society in the design, implementation, monitoring and evaluation of public policies and budgets, the coordination within and among the spheres of government, recognition of the contribution of the informal sector to the urban economy, as well as a commitment to responsible and sustainable management of natural, energy, material and cultural resources 94 . (1965), the International Covenant on Economic, Social and Cultural Rights (1966), the Convention on the Elimination of all Forms of Discrimination against Women (1979), the Convention on the Rights of the Child (1989), the Convention on the Rights of Persons with Disabilities (2006) as well as the Convention on Discrimination in Employment and Occupation No. 111 (1958)  How beautiful are the cities that overcome unhealthy distrust and integrate those who are different, making this integration a new factor of progress! How enchanting are the cities that, already in their architectural design, are full of spaces that unite, relate and favor the recognition of others 97 .

Convention on the Elimination of all Form of Racial Discrimination
According to the Pontiff, the increasing presence of people from different origins living together in the same urban areas can become a positive and creative sociocultural factor. Seeing migration as an "opportunity to build a future of peace" 98 and, as a believer, he states that when we turn that a gaze of faith "to migrants and refugees, we discover that they do not arrive empty-handed. They bring their courage, skills, energy and aspirations, as well as the treasures of their own cultures; and in this way, they enrich the lives of the nations that receive them" 99 . Besides recognizing the benefits of migration, since those who arrive ultimately respond to the needs and boost the economy of nations that receive them, Pope Francis also reinforces the indispensability of rule of law precepts in relation to this category of people, in the sense of prevent illegal and inhumane abuses 100 .
The Head of the Catholic Church points out four characteristics necessary for the proper reception of migrants in urban centers: welcoming, protecting, promoting and integrating. 101 While welcoming appeals to the premise of expanding the options for remaining lawfully and balancing social tensions while safeguarding Human Rights, protecting reminds us of the duty to actively respect the dignity of those who seek shelter and prevent their exploitation. Promoting refers to supporting full human development, especially in education, at all levels. Finally, integration means allowing everyone to participate fully in the life of the society that receives them, "as part of a process of mutual enrichment and fruitful cooperation in service of the integral human development of the local community" 102 .
To ensure that cities welcome climate-induced migrants, it is essential to have a deliberate rights-based approach to city governance. This means having universal and equal access to basic human and social services, equality of treatment and opportunity. Thus, urban governance needs to supress discrimination, racism or xenophobia. Cities must be genuine places of diversity, offering the best prospects for future development, engaging all stakeholders in decision-making and implementing multi-level governance, dialogue, cooperation and accountability: We need better policies, more engagement and adequate support for local governments to harness the significant benefits from migrants in our cities. In order to enable dignified support of migrants who come in large numbers, governments at all levels need to empower local actors and collaborate effectively to promote people-centered integration policies which both protect the human rights of migrants, and also to improve the quality of life for all those living in cities 103 .
For the above reasons, if well managed, urban centers can stimulate sustainable development and provide better socioeconomic conditions not only for current inhabitants, but also for all those who migrate there. Urban governance must be developed to be capable of implementing comprehensive, balanced and inclusive policies, cover all sectors of the community equally. Outcomes depend on factors such as the nature of local democratic institutions and processes, the resources available and the ability of climate-induced migrants to organize and articulate demands 104 .
Climate-induced migration is no longer classified as something new by the international community. The novelty seems to lie in the complexity of the challenges imposed on the dynamics of a society proposing to achieve sustainable development and real equality through outdated policies riddled with lacunas. Although romanticized this ideal of cities welcoming climate-induced migrants with open arms, significant challenges remain.
While States remain locked in the anachronism of egoistic sovereignty and fail, historically, cities often held an autonomous position. When faced with global risks, such as climate change, they are more open to cooperative cosmopolitan politics and adaptation to new realities. According to Beck, urban  politics" 105 and, for this reason, they "turn into pioneers which take up the challenge of cosmopolitan modernity as an experiment to find answers to a world at risk" 106 . Hence, it is possible to frame cities as actors that play an important role in tackling climate change and climate-induced migration.
As cities can take individually binding decisions, their decisions collectively are embedded in an active way in international law making. Besides, they are subject to traditional democratic practices and challenges: as example, their mayors have to be re-elected based on how much they have achieved when faced with unplanned urban growth -as cities are the primary destination for internal and cross-border forced migrants -and the ability to keep large towns functioning in a sustainable way 107 .
It remains to be seen if urban areas will be able to evolve toward a central position similar to that which they inhabited long ago, before the nation-state society. Even though humankind began its paths towards politics in the polis -the city -, for millennia, cities relied on monarchy, empires and nation-states to produce and reproduce social and political order. As the current system does not present effective responses to climate migration and is failing in the face of global risks, such as climate change and its adverse effects, cities might once again play a relevant role.
105 BECK, U. The metamorphosis of the world. Cambridge, UK: Polity Press, 2016. p. 180. 106 BECK, 2016, p. 180. 107 As example, in New York City, all migrants (regardless of their status) are eligible Sao Paulo has established a municipal migration policy developed in accordance with human rights principles and non-discrimination. It draws upon migrants' voices through participative consultations. Further, cities in Germany are making novel uses of urban spaces and infrastructure to house recently arrived migrants, while volunteer-led projects among urban citizens have emerged to foster a welcome culture that can lead to sustainable forms of inclusion. In: AMRITH, 2016, p. 03.

Conclusion
Migration processes have been intensified due to the impacts of climate change. As a large part of climate-induced migrants remains within their national borders, with movements usually taking place from rural to urban areas, debates on the effects of human flows in cities have come to the fore. Even though (i)migration is considered one of the central aspects of urbanization, the arrival of new inhabitants in urban spaces is seen as being responsible for the arising of socioeconomic instabilities.
By increasing GHG emissions into the atmosphere, cities become incapable to cope adequately with the consequences of climate change, exposing vulnerable groups to a variety of hazards. In addition to that, climate-induced migrants also have to deal with other difficulties stemming from rapid-urbanization: vulnerability, associated with environmental degradation, give rise to unprecedented socioenvironmental crises, affecting not only social and economic aspects but also threatening human rights.
Thus, urban planning and governance can contribute to the sustainable expansion of cities. Besides sustained economic growth and environmental protection, they also promote inclusive and social development. It was in this context that SDG 11 was investigated.
Albeit addressing cities as transformative forces of sustainable development, SDG 11 does not refer to the role played by climate-induced migration to urbanization processes. One should keep in mind that the arrival of migrants offers social, economic and cultural advantages, reducing poverty and fostering human development.
As such, the New Urban Agenda was explored. Established to rethink the way human settlements are being planned and managed, it highlights the need to respect migrants' human rights -especially the right to the city. It also acknowledge the positive contributions of migration to urban life.
Ensuring welcoming cities for climate-induced migrants requires not only access to basic goods and services but also equal treatment and opportunities. Likewise, urban centers should be recognized as dynamic places and drivers of multiculturalism. They can enhance socioeconomic conditions for their inhabitants and for all those who move towards them.
Therefore, displacements associated with the adverse effects of climate change are no longer considered as something new by the international community. The novelty seems to lie in the complexity and difficulty of developing effective solutions to the topic. In this sense, urban planning poses challenges to a society that seeks to achieve sustainable development through outdated and gap-filled policies.