How 4 largest cities in the world have transformed over time

4 largest cities in the world Tokyo, New Delhi India, Shanghai China, São Paulo Brazil. More people now live in urban cities than in rural areas.

Tokyo, Japan
Tokyo is the largest urban area in the world with a population of 37 mn people, which is 11% of Japan. It experienced an economic slump in the early 90s but overcame this with 2 fiscal reconstruction programs. In 1997, the population started retuming & immigration exceeded emigration for the first time in 12 years.

New Delhi, India
The Geographic size of New Delhi doubled in a span of 20 years (1991-2011) It attracts thousands of migrants as it has one of India's highest per capita incomes. By 2028, New Delhi is expected to surpass Tokyo as the world's most populated city.

Shanghai, China
When the Chinese government opened up the country in the 1980s, fast urbanisation changed Shanghai's natural ecosystem. Increased wetland loss & rising temperatures gave rise to the 'heat island' effect. Since then, urban greening efforts have been employed to make the city sustainable & eco-friendly.

São Paulo, Brazil
São Paulo is a city that holds 10% of Brazil's population. As per UN, the population growth rates have also dropped in São Paulo during 1990-2018 With the rise of slum neighbourhoods or favelas, these communities often lack access to water and electricity.

More people now live in urban cities than in rural areas

  1. In 1950, 30% of the world's population was urban, which increased to 55%by 2018.
  2. By 2050, 68% of the world's population is projected to be urban.

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