![](https://journalists.org/wp-content/uploads/2019/10/Mark-Hansen-e1567196555605.jpg?w=300&h=300&crop=1)
Mark Hansen is a professor at Columbia Journalism School where he also directs the David and Helen Gurley Brown Institute for Media Innovation.
Professor • Columbia University
Last edited October 18, 2019
Mark Hansen is a professor at Columbia Journalism School where he also directs the David and Helen Gurley Brown Institute for Media Innovation.