NPR’s Talk of the Nation: Science Friday with Ira Flatow will broadcast live from Northern Arizona University’s Prochnow Auditorium from 11 a.m. to 1 p.m. Friday, Sept. 23.

The program will feature NAU forest ecologist Wally Covington and other scientists from Flagstaff and northern Arizona.

Tickets to the show have been sold out. But radio listeners can tune in to KNAU at 91.7 FM to listen to the program live. Or visit KNAU’s Facebook page and listen to KNAU for opportunities to win tickets.