Sarah Critchfield is Upworthy's editorial director. Photo by Esty Stein for Personal Democracy Media used under a Creative Commons license.

Eighty-seven million people read Upworthy in November, according to the viral media startup’s blog.

What gives?

Meet Sara Critchfield, the Penn and Drexel graduate who’s leading the editorial side of Upworthy. Read Philadelphia Weekly’s Q&A here.

Also find a Nieman Journalism Lab profile here.