If you’ve tried to buy much of anything lately, there’s a decent chance some of the products you’ve been scouring aisles for have been out of stock. On today’s show, we air the first segment in our new collection, “Temporarily Unavailable,” which explores how stuff moves around the world … or doesn’t. Host Kai Ryssdal gives us an inside look at the Marine Exchange of Southern California in the largest port complex in the U.S. And later: how former “Survivor” contestants are profiting from their reality-star status; companies eye tariff relief under Biden; and new merch is coming your way, courtesy of a new Walmart and Netflix partnership.