Brownfields are previously developed properties that may be contaminated or have hazardous substances present. These sites often include abandoned factories, old gas stations, or industrial areas. The presence of pollutants can hinder redevelopment and pose risks to public health and the environment. Efforts to clean up and redevelop Brownfields can lead to revitalized communities and improved land use. Various government programs and initiatives aim to encourage the cleanup process, making it easier for developers to transform these sites into parks, housing, or commercial spaces, ultimately benefiting local economies and residents.