Whilst most of Australia consists of arid deserts and dense bushland, the oceanic coasts to the south of the country have a terrain and climate ideal for vine cultivation and wine production. It took several decades of failed attempts at the end of the 18th century in order to produce vines of a decent enough quality for making wine, but since those first false starts, the Australian wine industry has continued to grow and grow. Today, wine production makes up for a considerable part of the Australian economy, with exports in recent years reaching unprecedented levels and even overtaking France for the first time ever. Whilst the greatest successes in regards to quality have been the result of the Syrah grape varietal (known locally as Shiraz), Australia utilizes several Old World grapes, and has had fantastic results from Cabernet Sauvignon, Merlot, Riesling, Chardonnay and more. As the Australian passion for locally produced wine continues to develop, wineries have begun experimenting with a wider range of grape varietals, meaning that nowadays it isn't uncommon to find high quality Australian wines made from Petit Verdot, Sangiovese, Tempranillo and Viognier, amongst many others. 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 vast region of South Australia is home to a wide variety of vineyards, growing a large range of different grape varietals. Because the South Australian wine region is so large, it benefits from a great array of climatic conditions – from dry and hot, to cool and windy – which wineries can use to their advantage when it comes to selecting the grape varietal they wish to thrive in a particular sub-region. South Australia is most commonly associated with the big, powerful and fruit-forward Shiraz wines which are produced in the cooler valley areas of the region, but recent decades have seen something of an explosion in the South Australian wine industry, leading to wineries expanding their repertoire enormously and experimenting with other fine grape varietals and making the most of their unique terroir.