There is a form of jet lag that does not involve time zones. It is what happens when you hurl yourself from one climate to another. Your watch stays the same but everything else is out of sync. I got on a plane in the middle of winter. The snow was piled up higher than my head in places. Everything was a brittle and blinding white. A few hours later, I stepped into summer. The air was warm, and I was surrounded by green -- soft, lush green. Instead of bare brown limbs, there were palm trees overhead, and flowers blooming, orchids being sold by the side of the road, fountains playing like music. It was as much a shock to my system as crossing into another time zone. And in a way it was just that: crossing from one season to another. So I have let my frozen bones soak up the warm. When I step off the plane, it will be maybe almost 20 degrees, and there will be no palm trees….