Urban blights are a major issue in many cities around the world. They refer to the environmental and social problems that arise from urbanization, such as air pollution, overcrowding, and poverty. Two of the most common urban blights are smogs and concrete jungles. Smogs are caused by air pollution, which is often the result of industrial activities and vehicle emissions. Concrete jungles are areas of cities that are dominated by large buildings and infrastructure, with little green space or other natural features. These areas can be difficult to live in, as they lack the amenities and services that are found in more traditional urban areas.