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. Chile is a fascinating country when it comes to wines and viticulture, and by far the most internationally renowned wine region in the country is the Valle Central. This expansive valley is located close to the Chilean capital of Santiago, and stretches between the Maipo Valley and Maule Valley, a long, winding fault through the mountainous regions of the country which is now almost completely covered by vineyards producing wines of exquisite character. The region itself may well be associated with the 'New World' of wines, but in actual fact, vineyards have been cultivated around the Maipo valley since the 16th century, when settlers from Europe brought vines across the ocean with which to make sacramental wines. A wide range of grape varietals thrive in the hot climate of Valle Central, from the Cabernet Sauvignon and Merlot vines the country is most famous for, to Syrah, Chardonnay, Sauvignon Blanc and Carmenere.