Almost two years ago, ProPublica published its first story. In that time we've published more than 200 long-form investigations with more than 50 different publishing partners. The man at the center of those partnerships is our managing editor, Stephen Engelberg.

In this week's podcast, Engelberg discusses the collaborative process, what a story with "moral force" is, how we incorporate our Web development team into our work and the biggest challenges facing ProPublica.

Engelberg came to ProPublica from The Oregonian in Portland, Ore. During his years there, the paper won a Pulitzer for breaking news and was a finalist for its investigative stories on methamphetamine use and on charities intended to help the disabled.

Prior to working in Oregon, Engelberg worked for 18 years at The New York Times, starting its investigative unit in 2000. Projects he supervised at the Times on Mexican corruption (published in 1997) and the rise of al-Qaida (published beginning in January 2001) were awarded Pulitzer Prizes.

Here at ProPublica, Engelberg oversaw the reporting and editing of "The Deadly Choices at Memorial," which was awarded the 2010 Pulitzer Prize for Investigative Reporting.