Here's what you may have missed this week on 60 Minutes.Colleges and universities prepare for fall classes in the middle of the coronavirus pandemicGreenwood, 1921: One of the worst race massacres in American historyAppeals board protecting federal workers unable to function because of vacant positionsHow Tulsa's Greenwood massacre echoes todayWhat fall sports might look like across NCAA campuses60 in 6: A new era in storytelling for 60 Minutes