Global Warming Prompts Fears For California Wine's Future

ST. HELENA, CA - JULY 12: A field worker removes leaves from grape vines July 12, 2006 at St. Supery's Dollarhide Ranch in St. Helena, California. A study published in the Proceedings of the National Academy of Sciences, suggests that rising temperatures brought on by global warming could wipe out California's rich wine regions in Sonoma, Napa and Santa Barbara counties by the end of the century. (Photo by Justin Sullivan/Getty Images)