Deutsche Umwelthilfe (DUH), together with citizens in 338 cities and municipalities, has submitted applications for mandatory filters for new wood-burning stoves and for mandatory retrofitting of old wood-burning stoves. Especially in cities such as Berlin, Munich, Hamburg, Bonn and Freiburg, DUH criticizes excessive particulate pollution from wood-burning stoves. Currently, due to the Ukraine war, more and more people...