it's not very serious here in japan, because it's a bit far from chinese desert that is a source of the dust. it makes the sky clouds, cover cars by small amount of dust. but in china or korea, it's near by the source, so they say it's more serious. a korean paper says that when it's very serious, they can't see a builing just 1 km ahead. is it true?
i belive that the days we have the dust are incleasing lately, it might be because of chinese economical progress. gee.