The green skinned grapes of the Sauvignon Blanc varietal had their origins in Southern France, where they are still widely grown and used for many of the excellent young and aged white wines the region is famous for. Today, however, they are grown in almost every wine producing country in the world, and are widely revered for their fresh and grassy flavors, full of tropical notes and refreshing, zesty character. Sauvignon Blanc grapes thrive best in moderate climates, and ripen relatively early in the year. This has made them a favorite for many wineries in the New World, where they can still produce healthy and high yields in the earlier part of the summer before the temperatures become too hot. Too much heat has a massively adverse effect on Sauvignon Blanc, as the grapes become dull in their flavor, and the wine produced from them loses all its unique character and high points. As such, Sauvignon Blanc farmers have had a lot of trouble from global warming and climate change, as they are being forced to harvest their crops increasingly earlier in the year when it is cool enough to do so. The central Italian region of Tuscany is widely understood to be one of the world's most famous and highly regarded wine regions. The beautiful rolling hillsides and medieval towns and castles which are a key feature of the area are also home to many of Europe's finest wineries, and extremely high quality vineyards growing the distinctive Sangiovese and Vernaccia grape varietals which are the flavorful backbone of Tuscany's wonderful red and white wines. For almost three thousand years, this region has been recognized as an ideal home for wine production on a large scale, and the ancient Etruscans, Greeks and Romans all noticed that fine grape varietals flourished on the unique soils and under the hot sunshine which typifies the area. Today, Tuscany is home to a wide range of wines, from the traditional to the complex, but all dedicated to excellent flavors and aromas, and maintaining the region's international reputation.