Back to school vibes: The Late Late Show with Ed Finch & Toby P-C

A spontaneous and lengthy chat about teaching states of matter, about glasses and supercooled liquids and the Challenger Space Shuttle disaster.  Also, back to school and the double life of a teacher flipping from summer and back into the groove.  And Ed's hilarious umbrella joke, plus Toby remembering the blandness of Tracy Chapman songs live on air.  Next week:  more meandering and a preview of the Rethinking Education conference.