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Urban problems are pollution, (air, water, soil) rapid population growth, growing poverty, political impact of problems and unequal distribution of wealth. Some cities are trying to get rid of these problems by doing projects. Lima, Peru for example, has a self-h ....

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.... designed by the people who were going to live there. They had biological treatment and recycling of water and sewage. No thru-traffic. They were close to public transit. They had greenery on their balconies and roofs. Solar panels for power and they used non-toxic building materials. Another city named Curitiba in Brazil is also developing ways to get rid of pollution and urban problems. They have the people’s needs at the heart of the plan. They have a bus system that mimics Subway systems in large cities. About 900000 people ride on it a day. That is two thirds of the cities’ population. They have low-pollution industrial zon ....