Bangladesh is located in the south part of the Asia, a country full of natural resources and beauties. But we are developing and the touch of the development procedure blessed(!!) us with the curse of pollution. 

And we are recently declared as 4th most polluted in the world. 

I am very sorry to present the issue, but it a undeclared challenge from the very beginning time of the development. You know the City Dhaka is more than 400 years old.And we do have a lots of industries, pharmaceuticals, mechanical procedure. These are releasing the chemical gas to the air and we have a good transportation system too and that is also contributing in Air pollution. One  report said that about 90 percent of people living in the cities are being exposed to dangerous levels of air pollution.
Outdoor air pollution killed 3.7 million people in 2012 and according WHO it is now the world's largest single environmental health risk.
That report also informed only 12 percent of people are living in cities that conform to the WHO air quality guideline levels. 

i didn't added the data a lot cause we do know all about this. What we don't know is that we are making our life time short day by day !! 

At last i request to all please lets share the issue of air of your country.