Sustainable wine has been a hot topic in the Bay Area for several years. The California Sustainable Wine Growing Alliance unites those producers who wish to think responsibly about their impact on the environment, and wine bars like Yield are popping up to offer green wines to the conscious consumer. Terms like organic, biodynamic, green, and sustainable are being tossed around in the wine industry as much as everywhere else, and oenophiles are adding these considerations to the already long list of qualities that are desirable in a good wine.
A recent paper from the American Association of Wine Economists, however, demonstrates the minimal impact of these efforts in comparison with simply applying a rule of local consumption. The paper proposes a green wine line that separates the United States into two regions based on whether the lighter carbon footprint comes from drinking wines from Napa or Bordeaux.
The paper is a bit more academic than most like wish to read, but Mental Floss has an excellent summary on their blog.