Is Krakow a clean city?
Is Krakow a clean city? More than 46,000 people die prematurely due to poor air quality each year. Krakow, Poland's second largest city, topped global air pollution rankings earlier this week with NO2 frequently at five times the World Health Organization's air quality guidelines.
Which is the No 1 cleanest city in the world?
1. Copenhagen, Denmark: The Cleanest Place in the World. The Danish capital of Copenhagen got to be the world's cleanest city through commitment to green living and eco-friendly practices.