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!

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