A half-century of “wide cross” hybridizations, which involve the movement of genes from one species or genus to another, has given rise to plants – including everyday varieties of corn, oats, pumpkin, wheat, black currants, tomatoes, and potatoes – that do not and could not exist in nature. Indeed, with the exception of wild berries, wild game, wild mushrooms, and fish and shellfish, virtually everything in North American and European diets has been genetically improved in some way.