Urban sprawl is the uncontrolled expansion of urban areas out into surrounding rural areas. Urban sprawl happens when people that live in urban areas decide to move into rural areas for reasons like, calmer areas, cheaper land and housing cost and many more. A lot of people don't realize that urban sprawl is going on because they think its fine to move into rural areas even if they have to destroy the environment around them, but they don't understand the issues and health risks urban sprawl has on humans and wild life.