How are savvy progressive media professionals successfully using broad-based, popular media as vehicles to change our culture’s story? With Leila Conners-Petersen and Nadia Conners, Tree Media Group’s producer/director sister team of Leonardo DiCaprio’s The 11th Hour; and Paul Lussier, producer/director of the Discovery Channel’s forthcoming environmental dramatic series, FINAL HOUR. Moderated by KPFK’s Free Forum host Terrence McNally. (A17)