Guangzhou China Did Not Make the List?
I remember in the 1980's flying in to Hong Kong. From many miles away over the ocean you could see the island... clearly. You could see the buildings as the plane approached.
Fast forward to 2003 flying in to Hong Kong, all you could see was... well, it looked like we were in a cloud that started way off shore from the ocean. After landing, the pollution was so bad you could not even see across the tarmac. And that was Hong Kong.
Took a train to Guangzhou. Clear skies? No clouds? It was kind of like Henry Ford said with his cars. Paraphrasing... the sky can be any color you want as long as it is a dirty grey color. Busses belching polluted smoke, everyone covering their noses and mouths with handkerchiefs.
Very, very, very hard to breathe without coughing after every breath. It was worse than Los Angeles in the 1970's. I can not believe it did not make the list.
The Chinese government really needs to do something to crack down on all the air and water pollution in China. They are moving towards a lot of solar, but the pollution will be so bad that direct sunlight will probably not even reach the solar panels. Which is a shame. The country is beautiful. And the people there are very friendly. They deserve better.