2017 Fall Visitors photo with Interim Department Chair in front of Umbilic Torus, from left DU Yunfei, LI Yanmei, NIE Dan, Wolf Schafer, Gang He, and ZHANG Tao

2017 Spring Visitors photo with Department Chair in front of Simons Center, from left HUI Jingxuan, BAI Hongtao, David Ferguson, Gang He, ZHANG Junfeng, and SUN Qian

2016 BNL visit with Grand Challenges class students

2015 Graduation

ERG faculty, Master's and PhD graduates 2015; Source: Zoe Anna

Google Clean Energy Visit with ERGies, Mountain View, 2010

Stanford University with PESD colleagues, Stanford, 2009

Columbia University with C&S friends, New York City, 2008; Credit: Arezou Paksima

Tallberg Forum, Sweden, 2007; Credit: JIA Feng

Graduation from PKU with friends, Beijing, 2006

UNFCCC CoP11, Montreal, 2005