I don't understand that there wasn't more of a public response to this report. You can really notice yourself easily that the air quality in Doha is really poor. And I am not talking about the dust and sand but industrial and car air pollution.
Have you ever noticed that new trucks from Renault, Mercedes, etc. blow out black smoke. They don't if registered in Europe which means that they are imported with a much lower emission standards.
It would be easy to fix this issue for a country as rich as Qatar but they are doing nothing about it. Shocking!