The South Asian countries of Pakistan, India and Bangladesh are among the most polluted countries in the world while Australia, New Zealand and Iceland are among the least polluted countries, a new ...

Some countries are known for having dangerously high pollution levels, poor sanitation, and large amounts of unmanaged waste. These problems are usually caused by overpopulation, industrial activity, ...

Pollution is not something you think about when traveling. Flight tickets, luggage, and activities are what you usually focus on. But have you considered if your destination is one of the most ...

India may be overtaking China as the world's most polluted country. Even now, which country is worse depends on the day. NPR's Julie McCarthy joins us from New Delhi with new figures about the city's ...