severe air pollution china

air architecture asia asian atmosphere background bad beijing building capital carbon chimney china chinese city cityscape climate deadly desert dioxide dirty disaster dry dust earth ecology emission environment environmental extreme factory fog foggy gas global hazard hazardous haze hazy health healthy hot industrial industry landscape low mist misty natural nature outdoor particulates poison poisonous polluted pollution population sandstorm sandy scenic season severe sky skyscraper smog smoke street tower toxic travel unhealthy urban view visibility warming warning weather wind yellow zhongwei