Tulsa, Oklahoma – On this edition of StudioTulsa, we speak with Dr. Richard Restak about his new book, "The Playful Brain: The Surprising Science of How Puzzles Improve Your Mind." This book --- which was created with the noted puzzle expert Scott Kim --- both explores and explains how games, puzzles, and other such head-scratching pastimes effectively work to keep the brain nimble. It's also brimming with great brain-teasers that are easy to learn (if not necessarily easy to solve). By giving readers the chance to work on puzzles while also learning about how such puzzles boost brain performance, "The Playful Brain" offers (as per Publishers Weekly) "a fun and illuminating pop science frolic that will make readers feel like, if not exactly think like, Einstein." Also on our show today, we welcome back our rapid-fire and reliably curmudgeonly popular-culture commentator Ian Shoales, who's not been heard on ST in quite some time. Today he's musing about the end of the world. Enjoy.