The world population is projected to increase by an additional one billion people by 2030 with Africa and Asia accounting for the greater share of this population growth. According to UN reports, more than half of the world’s population currently live in urban areas. By 2030, it is expected that more than 70 percent of the world population will live in urban areas, especially in developing countries. The steady influx of people to urban areas has significantly increased the demand for food, water and shelter in cities and those who cannot afford these basic amenities are referred to as ’urban poor’.
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