Sirius XM's Michael Smerconish: Jean M. Twenge, author of iGen: Why Today's Super-Connected Kids Are Growing Up Less Rebellious, More Tolerant, Less Happy--and Completely Unprepared for Adulthood--and What That Means for the Rest of Us (Atria, $27, 9781501151989).
The Talk repeat: Maddie Ziegler, author of The Maddie Diaries: A Memoir (Gallery, $21.99, 9781501150661).
Daily Show: Neil deGrasse Tyson, author of Astrophysics for People in a Hurry (Norton, $18.95, 9780393609394).
Late Show with Stephen Colbert repeat: Al Gore, author of An Inconvenient Sequel: Truth to Power (Rodale, $25.99, 9781635651089).
Conan repeat: Nick Offerman, author of Good Clean Fun: Misadventures in Sawdust at Offerman Woodshop (Dutton, $35, 9781101984659).
Tonight Show repeat: Lily Collins, author of Unfiltered: No Shame, No Regrets, Just Me (HarperCollins, $18.99, 9780062473011).
Media Heat: Neil deGrasse Tyson on the Daily Show