Sustainable Development Goal 11 (SDG 11 or Global Goal 11), titled "sustainable cities and communities", is one of 17 Sustainable Development Goals established by the United Nations General Assembly in 2015. The official mission of SDG 11 is to "Make cities inclusive, safe, resilient and sustainable". The 17 SDGs take into account that action in one area will affect outcomes in other areas as well, and that development must balance social, economic and environmental sustainability. SDG 11 has 10 targets to be achieved, and this is being measured with 15 indicators. The seven "outcome targets" include safe and affordable housing, affordable and sustainable transport systems, inclusive and sustainable urbanization, protection of the world's cultural and natural heritage, reduction of the adverse effects of natural disasters, reduction of the environmental impacts of cities and to provide access to safe and inclusive green and public spaces. The three "means of achieving" targets include strong national and regional development planning, implementing policies for inclusion, resource efficiency, and disaster risk reduction in supporting the least developed countries in sustainable and resilient building. 3.9 billion people—half of the world’s population—currently live in cities globally. It is projected that 5 billion people will live in cities by 2030. Cities across the world occupy just 3 percent of the Earth's land, yet account for 60–80 percent of energy consumption and 75 percent of carbon emissions. Increased urbanization requires increased and improved access to basic resources such as food, energy and water. In addition, basic services such as sanitation, health, education, mobility and information are needed. However, these requirements are unmet globally, which causes serious challenges for the viability and safety of cities to meet increased future demands. SDG 11 represents a shift in international development cooperation from a focus on poverty as a rural phenomenon to recognizing that cities, especially in the global south, are facing major challenges with extreme poverty, environmental degradation and risks due to climate change and natural disasters. Despite its ambiguous targets and goals, is still an important tool for addressing urban challenges and calls for actors to develop realistic, locally defined indicators and outputs to fit the urban context of specific cities to promote more sustainable, inclusive and equal cities. Background In September 2015, the General Assembly adopted the 2030 Agenda for Sustainable Development that included 17 Sustainable Development Goals [connect to the general SDG page]. These goals are designed to be