Martin Luther's theological challenge to the Catholic Church that began with an inauspicious posting of 95 Theses on the door of the Wittenberg Cathedral set off a major schismatic movement within Christianity that still reverberates to this day.  And yet, there were many "reformers" who had come before Luther that didn't have the same impact as he did in the early decades of the 16th century.  Dr. Steven Pfaff, professor of sociology at the University of Washington, joins us for the second...

Keep on reading: Steven Pfaff on the World of 1517