Air Quality App Under 'Coordinated Attack' in Vietnam Amid Heavy Hanoi Smog

By REUTERS from NYT World https://ift.tt/2AOlJDR
via IFTTT Independent online air quality index monitor AirVisual said on Monday it is under "coordinated attack" to discredit the company after its data showed Hanoi has at times recently topped its list of 90 major cities which suffer from air pollution.