University City Science Center CEO Stephen Tang addresses the crowd at the Science Center's 50th Anniversary celebration in October 2013.

Steve Tang is a firm believer in the elusive “Inbox Zero.”

“I’m obsessive about having a clean inbox in my e-mail,” the University City Science Center president told the Philadelphia Inquirer. “To me, the overhang of having stuff in your inbox clogs your thinking. Right now, there are only 11 messages.”

Read more about the work habits of Tang and other local CEOS here.