A few children strap ridge city Pacific Ocean in Russia swing swings on coastal beach, mist haze lets the setting sun and sky a grey . (associated press) ministry of northwest of 　 United States is innocent recently the pain that suffers mist haze, northward Canada and 6 southern states produce silvan conflagration a few weeks recently, aerosol converging attack brings about air quality to return flooey than Beijing not only, still throw into confusion the dweller's life, school gym changes indoor hold, the flight because visibility is too low and incur loss through delay, the person that because respiratory tract is unwell,seeks examine also increased. A flock of tourists kiss water park amuse oneself in Xiyatu, the downtown of distance is enveloped in mist haze. (associated press) the 　 class outdoor fails the student squeezes gymnasium completely recently morning, washington city city of bank of Si Bo of the 2nd big city " high school of hill of Si Bo bank " 600 students are swarmed inside gymnasium, the student that has soccer class practices hitting ball coming back, the student practice that has cross-country racing runs, still instrument team member is learning twirl baton, because the air outside is dirty,arrive cannot breathe. August 20 is population a the air of Si Bo bank of 210 thousand 5000 people is worst day. The global investigation of IQAir of kosher equipment manufacturer shows Swiss air, sibokan's air compared global any big city that day flooey, include all along the Beijing with mist serious haze and Pakistan Lageer. In addition, the whole world that exceeds 300 thousand in population in 80 cities, the Wengehua western becomes Canada world of day air quality is the poorest, it is the Xiyatu of American northwest ministry next. City of horse of division of Washington city tower the afterglow August 19, mist haze makes a sky particularly dim. (associated press) 　 mimics dean of hospital of old Yan gun is medium also arrange of environmental protection of action United States shows air quality with air quality index, numeric 101-150 expresses to be opposite sensitive a group of things with common features group insalubrious, 151-200 is insalubrious to everybody, 201 above are very insalubrious. Sibokan arrived 25 days on August 19 between achieve 226, wengehuada arrives 165. Washington city Anjilisi harbor city " Olympic hospital " decanal Louis says, he does not have respiratory tract disease, and abandon everyday routine takes a walk already two many weeks, recently still sore throat, husky, breath is difficult, " seem to turn old Yan into suddenly the gun " . Mist haze envelops Washington city tile to pull tile to help city, the visibility on the street not beautiful. (associated press) card of haze of mist of 　 high-pressure cause trouble is written come loose not to go air of ministry of Washington state modes of life and relation to their environment learns a Damapala to say, current high-pressure particularly tenacious, hold back Pacific Ocean to be blown toward the wind on the bank, bring about the harmful material in air cannot abreaction. He still says, american northwest ministry and Canada western contemporaneity of in former years often has high-pressure envelop and bush fire indulge in wilful persecution, the time that nevertheless mist haze lasts this year is particularly long, incidence is particularly big also. City enveloped Sibokan almost in August in mist haze, chase after those who make the same score 20 years to come the longest record. Washington city shellfish is clever Chinese city testament writings brush in good health hospital expresses, on August 20 morning, they receive many 100 to blame phone of respiratory tract unwell, bureau of Huo Gelan medicine says, air filter clean guaze mask just just arrived on August 22, sell inside a few hours give 85. On August 15, car advances on the interstate highway of Washington city, mist haze makes distance hill scene hazy. (associated press) 　 copyright statement: If involve copyright issue, ask an author to hold authority to belong to the proof contacts with this net (article origin: Wall bulletin of life of science and technology)