Luke Burbank and announcer Elena Passarello talk “do-overs” with real and hypothetical tattoos; author Anya Yurchyshyn discusses her new memoir “My Dead Parents,” in which she explores aspects of her parents she never knew; journalist and podcaster Mike Pesca dissects the most intriguing “what ifs” in sports history; science vlogger Lindsey Murphy reveals how she engages her young “Fab Lab" audience; comedian Robby Slowik ruminates on the need for a national anthem; and doom-wop singer-songwriter Prom Queen gives herself a musical makeover with her track “Blonde.”