These piglets on the Hardin farm in Danville, Ind., are going to cost more to feed than they will fetch at market. Dan Charles/NPR hide caption

itoggle caption Dan Charles/NPR

A supermarket's dairy case with shelves of yogurt. Benjamin Morris/NPR hide caption

itoggle caption Benjamin Morris/NPR

Egg producers and the Humane Society agree on a bill to require larger chicken cages, but the pork and beef industries fear they're next and are fighting it. Matt Cardy/Getty Images hide caption

itoggle caption Matt Cardy/Getty Images

Notice how some of these tomatoes have unripe-looking tops? Those "green shoulders" are actually the keys to flavor. pocius/Flickr.com hide caption

itoggle caption pocius/Flickr.com

Men at a slaughterhouse stand near hanging beef carcasses, late 1940s. Lass/Getty Images hide caption

itoggle caption Lass/Getty Images

Rei do Agro cleared trees from this land over the past 18 months. It previously looked like the land on the right. Belchion Lucas for NPR hide caption

itoggle caption Belchion Lucas for NPR

Workers harvest sesame, an oilseed crop, on the large farm that Quifel Natural Resources has set up in northern Mozambique. Dan Charles/NPR hide caption

itoggle caption Dan Charles/NPR
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Symbols like these are designed to help shoppers make healthier choices Dan Charles/NPR hide caption

itoggle caption Dan Charles/NPR