In the second decade of the twenty-first century, the built environment continues to be redefined on an unprecedented scale by global shifts of culture, economy, and geopolitical structures. Cities and countrysides are transforming differently from country to country; national and local governments continue to define specific legal frameworks impacting building practice; and value systems and social norms remain strongly bound to culture. At the same time, different regions around the world deal with similar changes, from urban sprawl and rapid urbanization to the consequences of an aging population and the lifestyle challenges of the middle class.
