By Marlene Cimons
German monk and theologian Martin Luther probably said it best: "Beer is made by men, wine by God." It's true—the world loves its wine. Americans, in fact, downed close to a billion gallons of it in 2016. But winemakers create a lot of waste when they produce all that vino, most of it in seeds, stalks and skins.
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EcoWatch Daily Newsletter
By Dan Nosowitz
This part of California, starting about an hour drive north of San Francisco, is one of the country's most important agricultural zones. Napa and Sonoma are home to thousands of grape growers and hundreds of wineries worth tens of billions of dollars per year, and there's also a thriving dairy industry (cows, goats and sheep), as well as some vegetable growers. Sonoma County alone has nearly 75,000 head of cattle. Further up the coast into the slightly cooler and more forested Mendocino County, there are thousands of cannabis farms.