Carbon neutrality is a big theme at Davos this year. Barclays, the British bank, offered to buy offsets to compensate for the carbon emitted by people traveling to Switzerland. (They didn't offer to do anything about all the hot air emitted once summiteers are in Davos.) But CNBC, whose parent company, General Electric, is reaping huge gains from the global demand for energy efficiency, seems to be taking carbon neutrality to extremes. Last night, I agreed to do a CNBC show at about 1:30 a.m. Arriving at the studio, I was pleased to learn that far bigger fish than me were willing to stay up late for a few minutes of airtime. Steve Adler, the editor of Business Week, was the other guest. But we were slightly chagrined when we showed up at the "studio"--a wall-less tent pitched in back of the main media center. The green room was more like a white room--a steady snowfall pelted us as we waited with anchor Becky Quick. And instead of the usual spread of fresh fruit and coffee, we were offered hand-warmers. A couple of cheeseheads and we could have been at a Green Bay Packers game.