pollution index

Air pollution in the capital, Beijing, China, was first classified as the yellow alarm group, the second highest level in the 4-step pollution warning system.

Heavy air pollution made the sun seem completely

Chinese cities suffer from the most serious air pollution in the world, but for years the government's air measurements have shown low levels of pollution. Public awareness has

The incident happened in Wuhan City, the capital of central Hubei Province. Witnesses said the mist suddenly appeared in the morning, causing locals to quickly wear masks when