Tom MacDonald brings us up to date on several investigations into last week’s deadly building collapse. Holly Otterbein gauges Philadelphia city council’s willingness to enable tax increases to balance the school district budget. Taunya English looks into which organizations are applying to be health care navigators, and the uphill battle they face. Peter Crimmins profiles a local playwright who just won a Tony award for his play, set in Bucks County. Franklin Institute Chief Astronomer Derrick Pitts joins us for Skytalk. And Jennifer Lynn surveys the preparations for this week’s U.S. Open at Merion Golf Club.