Do you know the grape balbiani ? Ever read about a grape named sezannensis , or one called oiriki ? Even if you’re an “expert” wine lover, curious to learn about everything in the wine world, it’s likely that you’ve never heard these names. Don’t worry if you don’t know about them. They were “ancestral grapes” that didn’t survive a glacial era more than 60 million years ago. Will modern grapes like cabernet sauvignon and chardonnay become extinct because of climate change in the future?