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Growth vs. Pollution: India's Dirty Secret
18 May
Summary
- Study links economic growth to pollution in 5,435 cities globally.
- Indian cities show increased fossil fuel dependence for growth.
- China leads in decoupling economic growth from pollution.
A recent study published in Nature Cities has mapped global urban economic growth against pollution levels, revealing stark contrasts. Between 2019 and 2024, researchers analyzed 5,435 cities, using satellite data on nitrogen dioxide (NO2) and GDP estimates to classify them. While 80% of cities globally are experiencing economic expansion with declining NO2, indicating a shift towards cleaner growth, India presents a different picture.
In India, 15.3% of the 902 cities studied saw a statistically significant increase in NO2, suggesting their economic activity is becoming more dependent on fossil fuels. India also hosts the largest share, 35.4%, of the world's "dirtier and richer" cities, where prosperity rises alongside pollution. This is attributed to factors like automobile dependence and heavy industry.
Conversely, China demonstrates significant success, with 719 "cleaner and richer" cities, including Beijing and Shanghai. This is credited to large-scale air quality interventions and the electrification of public transport. Some Indian metros like Delhi, Mumbai, and Kolkata also fall into the "cleaner and richer" category, proving that decoupling is possible under certain conditions.
