Flula and Alex talk to Conor Knighton--national park connoisseur and CBS Sunday Morning correspondent--about his excellent book "Leave Only Footprints" chronicling his journey to every single national park in the US! Tune in as Conor gives personal tips and some under-the-radar recommendations for people looking to "have some sassi outdoorly adventurings" (Flula's words, not Conor's) in America this summer. Grab his book anywhere books are sold! Learn more about your ad choices. Visit podcastchoices.com/adchoices