Last Saturday, three of our PhD students, Teng Teng, Yao Lu, and Hua Chai (from left to right), participated in the Philadelphia Marathon Weekend. They all completed the 13.1-mile half marathon. In their spare time, they trained diligently along the Schuylkill River banks and around the Pennovation campus. Congratulations to our PSL members! We hope you beat your personal bests very soon, and continue to do so repeatedly!