This week's broadcast, hosted by Jane Pauley, features Martha Teichner's report on the increase in incivility in public discourse and how it affects our democracy. Also, Anthony Mason reports on a musical milestone, Billy Joel's 100th sold-out concert at New York's Madison Square Garden; Tracy Smith interviews The Go-Go's, one of the most successful all-female bands in rock 'n' roll history; Dean Reynolds checks out a Chicago art exhibition featuring works by artists with disabilities; and Mark Strassmann profiles comedian Sebastian Maniscalco.