TURIN, Italy -- For Slow Food enthusiasts every two years, all roads lead to this Piedmont city. [...] "We learned Europe is 80 percent non-GMO, Poland entirely GMO-free," said Barb Kline, referring to "genetically modified organisms" -- plants or animals whose DNA has been altered by corporations to create desirable traits by adding the DNA of other plants or animals. "I would tell our customers to buy seeds only from a company like Harvest Moon with a safe-seed guarantee. We may as well give up on corn. I'm sorry, if you're buying corn, you are probably eating GMO.