Dave Davies considers whether Mayor Nutter’s speaking role at the Democratic National Convention means he might have a role in national politics in years to come. Maiken Scott visits children grappling with homelessness as they start the new school year. In the wake of two Camden murders thought to be the result of pcp-laced marijuana, Temple University Neurology Chair Dr. Ausim Azizi joins us to discuss the effects of the drug. Tom MacDonald reports on whether the migration of talk shows to the FM dial is spelling the end of AM radio. And Peter Crimmins brings us the work of students putting on experimental theatre shows at this year’s Philly Fringe Festival.