(Wines&Vines) - —Napa Valley Vintners assigned a group to analyze trends in climate change and how it could affect the valley’s wine industry. The recently reported results: Unknowns still outweigh certainties. “We’re still not interested in denying climate change is happening,” said Chris Howell of 23,000-case Cain Vineyard & Winery, a member part of the vintners’ committee on climate change. But, he added, it’s not happening to the extent feared, and widely reported.