Aaron Moselle looks into the research being done to find the cause of last month’s sewage line rupture in Chester County. Maiken Scott reports on a new study that questions whether medicinal marijuana is beneficial for patients with neurological disorders. Shai Ben-Yaacov speaks with Ken Doctors, Media Analyst for Newsonomics, about the sale of the Philadelphia Inquirer. Holly Otterbein brings the story of a group fighting street harassment and their satirical response to a Visit Philly billboard. Dave Heller and Franklin Institute Chief Astronomer Derrick Pitts discuss an upcoming eclipse in this week’s SkyTalk. Chris Satullo talks about Keystone Crossroads in this week’s Commentary.