Global Warming Makes Winemakers Sweat: John Mariani

To paraphrase Shakespeare, in the vineyards of the world, something worrisome this way comes. Over the last decade, global warming has started affecting those narrow zones best suited for growing wine grapes.

Warmer temperatures are a mixed blessing for winemakers. In colder climates like Bordeaux and Burgundy, more heat can increase sugars in the grapes.