The bottles might start to weigh less. About half of the wine industry’s carbon footprint comes from bottles, from manufacturing to transport (empty) and transport to new (once full). Bottles range from around a pound on the light end to over two pounds for these pretentious behemoths. Some winemakers like heavy bottles for aesthetic reasons, while others say heavier bottles are needed for wines intended to age. This point seems absurd to me, as most Bordeaux chateaux do not use ridiculously heavy bottles for their wines to keep. (Protection from light could be an advantage of thicker glass, as wine, unlike democracy, thrives in the dark. So keep the lights off in your cellar.) Progress on this front will likely be slow. . But in addition to the lighter bottles, you’ll see more wines in clear glass, which is easier to recycle than green or amber. Fewer bottles will be lined with foil, paper or plastic caps, which are traditional but purely decorative. And while glass will almost certainly remain the packaging of choice, there may be more boxes and cans, especially for wines not intended for aging.