The document lists the 12 most populous cities in the world and their populations. Tokyo, Japan is ranked as the most populous city with 36.7 million inhabitants. Delhi, India and Sao Paulo, Brazil round out the top 3, with populations of 22.2 million and 20.3 million respectively. The document notes that no European cities make the top 12 most populous list, with Moscow being the largest in Europe at 10.5 million inhabitants. It expresses concerns about overcrowding and living conditions in many large Asian cities.