Xyoo 2009 California Urban Forest Conference: "Tam sim no yog dab tsi? Tom ntej no? Txoj Kev Qhia Tshiab rau Nroog thiab Zej Zog Hav Zoov" tau ua tiav zoo. Ntau tshaj 100 tus neeg koom ua ke hauv chav sib tham hauv Ventura raws li Andy Lipkis, Thawj Tswj Hwm ntawm TreePeople, tau xa cov lus tseem ceeb ...