9 Po-Shen Loh, Founder of Expii, US Math Team Lead & CMU Professor

Po Shen Loh took an hour out of his day to sit down with the Going Deep podcast and discuss his company Expii that helps students learn difficult STEM topics.

We build the tools ordinary people need to educate one another. So far, we've designed an approachable markup language that enthusiasts have used to create thousands of lessons. We've also created a free platform to interconnect these lessons."

Po got his PHD in Mathematics from Princeton in 2010, where his thesis discussed combinatorics (the study of discrete systems) and probability theory. Prior to his work at Princeton, Po-Shen received the equivalent of a masters degree in mathematics from the University of Cambridge in 2005, where he was supported by a Winston Churchill Foundation Scholarship. He received his undergraduate degree in mathematics from Caltech in 2004, graduating first in his class, and his undergraduate thesis later received the Honorable Mention for the 2004 AMS-MAA-SIAM Morgan Prize.