Agence France-Presse: The air in Bulgaria is the most polluted in the whole of the European Union, the ministry of environment and water found in a new report published Friday. With dust levels persistently around 55 microgrammes per cubic metre — compared with an average of 30 mg in the rest of Europe and the maximum norm of 40 mg — Bulgarian air ranks as the most polluted in the EU, the report said. It blamed the high level of pollution on the large number of old vehicles in Bulgaria without …