Let us go back to basics: How can you tell if the food you are eating is genetically modified? Chances are, you can never tell. Some GM foods, however, have subtle differences that can easily be spotted by the naked eye. For instance, broccolini is a genetically-modified crop consisting of broccoli infused with a gene from Chinese kelp, resulting in a broccoli with longer stems. Let this video created by the people behind Expert Village explain to you how to detect GM foods even if they are unlabeled.