Source: China – South China Morning PostConcentrations of hazardous PM2.5 particles fell by 41 per cent in Beijing and 27 other cities from 2015 to 2021 because of the winter clean heating plan, researchers say.Read More
Source: China – South China Morning PostConcentrations of hazardous PM2.5 particles fell by 41 per cent in Beijing and 27 other cities from 2015 to 2021 because of the winter clean heating plan, researchers say.Read More