New York Times best-selling author Dan Egan writes about the source of great bounty—and now great peril—all over the world in his new book The Devil’s Element: Phosphorus and a World Out of Balance. He’ll visit the Traverse City Opera House on Friday, March 10, at 7 pm, for an event co-hosted by the National Writers Series and the International Affairs Forum at Northwestern Michigan College. Patrick Shea, environmental reporter at Interlochen Public Radio, will be the event’s guest host.