The Faculty of Architecture, Chiang Mai University (FACMU) has organized a special lecture on the topic of "City Protection, Smog Reduction" on March 13, 2019 at 5.00 - 7.00 p.m. It was a great opportunity to have Lect. Chunlaporn Nuntapanich, special lecturer of FACMU, to give a lecture on "Trees in Big Cities and Dust Removal" and to have Asst. Prof. Ronawee Suwantamalee, Associate Dean for Administrative Affairs and Human Resource Development of FACMU, to give lecture on "Working Environment Management Guidelines to Reduce Air Pollution."