Mobile lab pinpoints wood stoves and old power plants as Sarajevo's smog sources

Worldwide, it ranks among the cities with the highest levels of air pollution—and it's located in the heart of Europe: Sarajevo, the capital of Bosnia and Herzegovina. Previously, the spatial distribution of air pollutants here was largely unknown, as were their sources. Now the Paul Scherrer Institute PSI, using its mobile laboratory, has provided the first reliable data—and found the causes of the high level of pollution.