IntroductionSustainable development implies a development project in which people meet present needs without compromising the needs of future generations. In short, sustainable development is a combination of the concepts of needs and constraints (Lyle, 2011). The concept of needs implies the basic needs of poor people in the world. Global development projects could easily neglect the needs of the poor, hence the intervention of sustainable development. The idea of ​​limitations, however, refers to the limitations that technology and social structure impose on the environment's potential to satisfy present and future human needs. Accordingly, the United Nations identified economic development, social development and environmental protection. The critical discussion contained in this paper aims to address the concept of sustainable development by examining the main fields involved in sustainable development and the solution initiative to sustainable development. There are different areas of sustainable development. Scholars broadly classify domains into ecology, politics, culture, and economic domains. Ecology The sustainability of human ecology refers to the relationship between humans and their natural environment, the social environment, and the structural environment. The sustainability of human ecology involves issues involving human health. Achieving sustainable development in the context of human ecology means ensuring that quality air, food, water and housing are present and accessible to all human beings. Sustainable development regarding ecological concerns involves agriculture, energy and the environment. Sustainable agriculture consists of adopting environmentally friendly methods. About...... half of the document ......about city initiatives aims to eliminate the challenges faced by most cities around the world. Challenges faced by modern cities include increasing populations, limited resources, the expansion of slum housing, and threats of environmental change (Pearce, 2013). SDSN plans to collaborate with several cities around the world to develop projects to achieve sustainable development. An example of a city that is already undergoing changes is the city of Rio de Janeiro. Conclusion In summary, sustainable development implies a development project in which people meet current needs without compromising the ability of future generations to meet their own needs. The discussion on ecology, politics, culture and economic spheres of sustainability reveals the fact that the world needs sustainable development to safeguard the lives of future generations.