As part of the Year of China, artist Patrick Lui will discuss his exhibit, "Green Dragon," currently on display at the Granoff Center. The exhibit explores the once-rare but now rampant dust storms that plague Beijing and the efforts of the city and country to reduce pollution and make ecologically sound decisions. This discussion begins at 6 p.m. in the Granoff Center for the Creative Arts, 157 Angell St. http://brown.edu/about/administration/international-affairs/year-of-china/calendar/week/20120419