World-wide, cities are on the advance. Today, they host more than half of the world's population and every minute, their population grows by 140 people: 200,000 a day, 1.5 million a week. Cities have become so powerful that some even sign international agreement with nation states, conducting their own foreign policy. However, the scale and pace of current urbanization trends poses a threat to even the best managed cities.
This working paper by adelphi explores the new research field of city fragility and its links to climate change and migration.