If you live in the U.S., it's likely that you eat a lot of GMO foods, and there is plenty of scientific evidence that these foods are perfectly safe. Still, many consumers want GMO foods to be labeled, simply because they want to know whether their food is the product of genetic engineering or not.

A generation ago, most farms were still relatively small and independent, but the past 20-30 years have seen factory farms become a quasi-monopoly. What will farms look like a generation from now?