WGBH Radio's Margery Eagan (@MargeryEagan), BishopAccountability.org's Anne Barrett Doyle(@barrett_doyle) and Boston College's Thomas Groome take up Francis' speech to Congress.
Defense Attorney Barry Scheck (@barryscheck) talks wrongful convictions.
And WGBH's Cristina Quinn (@cristinatquinn) experiences anti-gravity on a treadmill.