Yan Heng, NDSU graduate student of agribusiness and applied economics, recently presented a paper at the Missouri Valley Economic Association annual meeting in St. Louis. Heng’s paper, “Accounting for Greenhouse Gas Emissions in Trucking Production,” was co-written with Siew Hoon Lim, assistant professor of economics. Heng also attended sessions on applied macroeconomics, global economics, health economics and the economics of water – topics she hopes to eventually apply to her own work. Heng is pursuing a master’s degree.