Chiang Mai, Many northern provinces are still facing a crisis of smog and toxic dust PM 2.5. In many areas, hourly toxic dust values ??are higher than the standard. To the point of affecting health for weeks. Providing information on toxic dust and giving warnings is therefore more necessary. Make researchers at Chiang Mai University Developing a motorcycle dust detector In order to measure dust more comprehensively and give more timely warnings .Source: Thai News Agency