<human>:  Help me find out more about the history of the craft beer industry
<bot>: The craft beer industry has grown exponentially since the late 1970s and early 1980s. In the United States, the craft beer movement began with a handful of breweries experimenting with traditional recipes and producing new, innovative styles of beer. The emergence of craft beer has been credited to transformative changes in the beer industry, such as the deregulation of the industry in 1979 which allowed small-scale brewers access to ingredients previously off limits to them. Today, the craft beer industry consists of thousands of breweries across the United States, producing a wide range of beers, from traditional lagers to specialty sours. Many of these breweries are also innovating with new flavors and styles for their products. The rise of craft beer has been driven by consumer interest in new flavors and styles, as well as by the increasing popularity of craft beer bars, beer festivals, and craft beer tours.