Social sustainability, as an integral dimension of sustainability, means durability or perpetuity in social structure and function. Simply speaking, social sustainability engages recycling and waste reduction in social life. Such engagement necessarily requires social actions such as community development and care, volunteering, mutuality, and socialization or enculturation to maintain social integration, health, and culture. Community development consists in urban renewal and related aid, including volunteering and its organization for mutual care, particularly for elders. The care also...