Fires, neglect, poor planning and migration have turned a growing problem into a threat of extinction for one of Istanbul's architectural forms: the wooden house.
Vitamin D is vital in activating human defences and low levels may mean their immune systems' killer T cells are poor at fighting infection, scientists said.
Turkey is passing through an important period. Parallel to this in internal politics it appears that developments are expected that will profoundly affect the social make-up.