Here in Puerto Vallarta, I just got back from Costco, where they have a big, refrigerated walk-in room that customers enter to buy fresh fruits and vegetables. I suppose that U.S. Costco stores have the same setup. As I walked into the chilly room, it reminded me of a winter day back home ...kind of melancholic, actually. Then I stepped outside, into the 91.4F (33C) sunshine. So much for my little winter vacation.:(