Laura Benshoff reports on the Philadelphia School Reform Commission’s appealing a ruling saying it can’t void teacher contracts. Scott Gurian looks into how meteorologists are changing how they forecast to better warn the public about dangerous storms. Dave Davies speaks with David Axelrod about his time spent on the John Street campaign. Derrick Pitts, chief astronomer at the Franklin Institute, joins host Dave Heller to talk about how twins are being used to study the effects of space on the human body in this week’s edition of SkyTalk. Peter Crimmins reports on a Philadelphia poet inspired by rapper Kanye West.