"For the Earth" Association again measures alarmingly high air pollution in Sofia with nitrogen dioxide
Julian Popov: Measures against dirty air are low emission zones, strict technical inspections, high taxes for old cars
Exclusive for 3eNews EU Commissioner Mr. Sinkevičius: Air pollution and the protection of nature in Bulgaria is still a cause for serious concern
Boris Bonev: Extremely large-scale information campaign for replacement of stoves should be a priority of Sofia Municipality
