Short 3-page argumentative paper: What is the single most important challenge to cities in the twenty-first century? Why and where? Draw on data and facts to support your argument. Also, draw on...

Short 3-page argumentative paper: What is the single most important challenge to cities in the twenty-first century? Why and where? Draw on data and facts to support your argument. Also, draw on academic scholarly literature (use at least 3 academic sources) and also draw on the gray literature (World Bank, Habitat International, IIE, etc.)? Due March 4

- housing affordability

- disruptive technologies

- disease/outbreaks

- urban economy/employment