What is the world's largest city? It just changed, UN says.

The last time the U.N. released its "World Urbanization Prospects" report was in 2018, when Tokyo was the world's most populous city.

Move aside Tokyo, the world has a new largest city

With an estimated population of nearly 42 million residents, Indonesian capital Jakarta soared from 33rd place to surpass Japan's Tokyo, according to a new United Nations report.

Lethal smog is back in the world’s most polluted capital. Residents have had enough

It’s easy to tell when it’s smog season in New Delhi; the air gets darker, heavier and starts scratching the throats and testing the lungs of the city’s 34 million residents.

One spouse is enough, Vatican tells world's Catholics

Happily ever after doesn't require any complicated maths, the Vatican said on Tuesday -- for Catholics, one spouse is enough.

USA at the World Cup: Potential Group of Death? Path to Final? 4th of July Game?

The U.S. men's national team take on the best teams from across the globe at next year's World Cup. Here's what to know.
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