A man holding an air quality measuring device at a protest organized by the Green Humane City initiative, demanding effective measures in combating the air pollution in Skopje, North Macedonia, on Tuesday, Dec. 10, 2024. (AP Photo/Boris Grdanoski)

People carry banners and chant against the authorities as they protest against the air pollution in Skopje, North Macedonia, on Tuesday, Dec. 10, 2024. (AP Photo/Boris Grdanoski)

People carry banners and chant against the authorities, protesting the air pollution in Skopje, North Macedonia, on Tuesday, Dec. 10, 2024. (AP Photo/Boris Grdanoski)

A man with a gas mask attends a protest organized by the Green Humane City initiative, demanding effective measures in combating the air pollution in Skopje, North Macedonia, on Tuesday, Dec. 10, 2024. (AP Photo/Boris Grdanoski)

People block a street during a protest organized by Green Humane City initiative, demanding effective measures in combating the air pollution in Skopje, North Macedonia, on Tuesday, Dec. 10, 2024. (AP Photo/Boris Grdanoski)

City towers are seen through haze in Skopje, North Macedonia, on Tuesday, Dec. 10, 2024. (AP Photo/Boris Grdanoski)

Buildings are seen through haze in Skopje, North Macedonia, on Tuesday, Dec. 10, 2024. (AP Photo/Boris Grdanoski)

A man with a face mask attends a protest organized by the Green Humane City initiative, demanding effective measures in combating the air pollution in Skopje, North Macedonia, on Tuesday, Dec. 10, 2024. (AP Photo/Boris Grdanoski)

People march during a protest organized by Green Humane City initiative, demanding effective measures in combating the air pollution in Skopje, North Macedonia, on Tuesday, Dec. 10, 2024. (AP Photo/Boris Grdanoski)

Buildings are pictured from above through polluted air in Skopje, North Macedonia, on Tuesday, Dec. 10, 2024. (AP Photo/Boris Grdanoski)