Taunya English brings us the latest installment of the ‘In the Gap’ series, examining at home kidney dialysis. University of Iowa Political Science Professor Tim Hagle weighs the effect Chris Christie’s non-candidacy is having on the GOP presidential field. Tom MacDonald reports on the latest death toll from the heat wave. Peter Crimmins visits an art exhibit aboard Philadelphia’s tall ship Gazela. And Derrick Pitts joins us for Skytalk.