Taking on the big problems
![Shenghao Yang](/math/sites/default/files/uploads/images/shenghao.jpg)
Part of being a PhD student is about confronting significant issues in a field of study. For Shenghao Yang, a second-year PhD student in the Cheriton School of Computer Science, it’s not just about confronting issues in his field, but also one of the biggest problems facing the world, COVID-19.