Pet scans show that some people with chronic schizophrenia have less activity in compared to people without schizophrenia.

People with schizophrenia have less activity in the frontal and temporal lobes compared to people without schizophrenia. This is conclusive proof that schizophrenia decreases brain function over time and contributes to the death of brain cells. In many ways, schizophrenia is a degenerative disorder.

Urban growth invariably feeds increased commercialization and industrialization. it requires continually expanding land areas. when urbanization rates are high, and countries do not have the institutional and managerial capacities or economic wherewithal to manage such rapid growths, they exert intense pressure on the types and nature of the resulting settlements. they contribute to the development of overcrowded slums and shanty towns without adequate essential services and necessary infrastructure.-by asit k. biswas and cecilia tortajada