toxic gas molecules

Large buildings almost disappeared under the dense smoke and mist in the capital of Beijing, China, when air pollution was still alarming.

Beijing is planning to prevent increasing air pollution clouds with artificial interventions.

On December 2, dust and fog covered the sky of Shanghai City, China's financial center.

Chiba Prefecture, east of Tokyo, warned that people on November 4 who didn't go out to the streets due to toxic PM2.5 gas molecules might have exceeded the permitted limits.