Iain Marlow Hannah Dormido Bloomberg

Several Chinese cities, including Beijing, have dramatically improved their air quality in recent years, while Indian metropolises remain some of the world's worst polluted, according to a new report.

As Prime Minister Narendra Modi bids for reelection, his party has said his skillful diplomacy on the world stage has increased India's global stature and brought in a flood of investment.

Several Chinese cities, including Beijing, have dramatically improved their air quality in recent years, while Indian metropolises remain some of the world's worst polluted, according to a new report.

As Prime Minister Narendra Modi bids for reelection, his party has said his skillful diplomacy on the world stage has increased India's global stature and brought in a flood of investment.