The document discusses urbanization around the world and compares the urbanization of China and India. It states that urbanization occurs as more people move from rural to urban areas, increasing the proportion living in cities. It provides data showing China and India both experienced rapid urbanization between 1950 and 2005, though China urbanized at a faster rate. Causes of urbanization mentioned include improving opportunities for work, education and transportation in cities. The document also notes effects of urbanization on natural resources like water, air, soil and energy sources, as well as on wildlife. It introduces the World Urban Forum, an international forum run by the UN since 2002 to address urban issues globally.