Stock Photo - Ostrava, the biggest city in Moravian-Silesian Region with air pollution (Smog), North Moravia, Czech Republic, on Sunday, December 7, 2023. The air in the Moravian-Silesian Region has been the worst in the Czech Republic for years. The situation is critical mainly in winter when local inhabitants are exposed to a high concentration of pollutants that affect their health. (CTK Photo/Drahoslav Ramik)

Stock Photo: Ostrava, the biggest city in Moravian-Silesian Region with air pollution (Smog), North Moravia, Czech Republic, on Sunday, December 7, 2023.

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