Guinness World Records has been tracking extraordinary achievements for 70 years, evolving from a small fact book into a global phenomenon on record-setting. Nancy Chen shows how records are created and judged, talks with record setters, like trainer Austin Head and highlights the wide range of feats recognized around the world. | CBS Mornings

Stephen Schwartz reveals that @wicked_musical contains several musical Easter eggs from “The Wizard of Oz,” including a nod to “Somewhere Over the Rainbow.” He explains that the show’s “Unlimited” motif was deliberately shaped to echo the classic melody, but different enough not to get sued. | CBS Sunday Morning

Stephen Schwartz is the composer-lyricist behind such Broadway hits as "Godspell," "Pippin," and "Wicked," which was adapted into two movies. Mo Rocca talks with Schwartz about the price of his early success and why he almost left composing Broadway musicals for good. Rocca also talks with Kristin Chenoweth, star of Schwartz's latest Broadway show, "The Queen of Versailles." | CBS Sunday Morning

When "Star Trek" legend William Shatner and America's favorite astrophysicist Neil deGrasse Tyson share the stage, sparks can fly on an astronomical level. They talk with Luke Burbank about their bromance built on an appreciation of science; the two-man show ("The Universe Is Absurd!") that grew out of a trip to the South Pole; and how curiosity about the cosmos can help keep one young. | CBS Sunday Morning