Researchers say there's plenty the beef industry can do to use less land and water and emit fewer greenhouse gas emissions. But producers may need to charge a premium to make those changes. iStockphoto.com hide caption

itoggle caption iStockphoto.com

Soybeans in a field in Springfield, Neb., on Wednesday. The nation's corn and soybean farmers will bring in by far the largest harvest ever this year, driving down the price of the commodities, according to the U.S. Department of Agriculture. Nati Harnik/AP hide caption

itoggle caption Nati Harnik/AP

Meat is displayed in a case at a grocery store in Miami in July. Pork and beef prices are up more than 11 percent since last summer. Joe Raedle/Getty Images hide caption

itoggle caption Joe Raedle/Getty Images

Not all cows get to spend their days with soft green grass under hoof. For many, the picture isn't so pretty, according to the book Farmageddon. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images

The drone in Potter's promotional video on Kickstarter. "Now I'm looking at other models (and a second drone) because some people have threatened to shoot it down," Potter says. via Kickstarter hide caption

itoggle caption via Kickstarter

Fox Ranch, outside Yuma County, Colo., is a 14,000-acre nature preserve and working cattle ranch owned by The Nature Conservancy. The ranch is an experiment in planned grazing, which aims to improve soil health and help ranchers' bottom lines. Luke Runyon/Harvest Public Media hide caption

itoggle caption Luke Runyon/Harvest Public Media

Eating some foods high in saturated fat is not necessarily going to increase your risk of heart disease, a study shows, contrary to the dietary science of the past 40 years. Cristian Baitg Schreiweis/iStockphoto hide caption

itoggle caption Cristian Baitg Schreiweis/iStockphoto

A new study linking animal protein-rich diets to increased mortality in middle age adds fuel to the controversy over how much protein — and from what sources — is ideal for health. One thing that seems pretty clear: It doesn't hurt to go heavy on the greens. iStockphoto hide caption

itoggle caption iStockphoto

German farmer Rudolf Buehler and other opponents of the Transatlantic Free Trade Agreement protest with 17 pigs in front of the chancellor's office building in Berlin on Wednesday. Soraya Sarhaddi Nelson/NPR hide caption

itoggle caption Soraya Sarhaddi Nelson/NPR

Somali refugees lead their herds of goats home for the night outside Dadaab, Kenya. A new study shows that animals in many parts of the developing world require more food — and generate more greenhouse emissions — than animals in wealthy countries. Rebecca Blackwell/AP hide caption

itoggle caption Rebecca Blackwell/AP

Richard Blais' Earth & Turf Burger, served at the Flip Burger Boutique in Atlanta, is 50 percent beef, 50 percent mushroom. Courtesy of Flip Burger Boutique hide caption

itoggle caption Courtesy of Flip Burger Boutique

In recent years, pork producers have found ways to keep the animals healthy through improved hygiene. M. Spencer Green/AP hide caption

itoggle caption M. Spencer Green/AP

One of the meatless dishes prepared at Benson Brewery in Omaha, Neb., for Meatless Monday is zucchini ribbon salad with a dressing made from roasted garlic and tahini, and garnished with green onions and toasted pine nuts. Courtesy of Vegan Omaha hide caption

itoggle caption Courtesy of Vegan Omaha

The changing landscape of of agriculture is leaving many sheep farms in the dust. Farms are larger and technology makes crops more economically attractive and sheep herds less. Luke Runyon/Harvest Public Meida/KUNC hide caption

itoggle caption Luke Runyon/Harvest Public Meida/KUNC

Banksy's "Sirens of the Lambs" started its tour of New York City in — naturally — the Meatpacking District. BanksyNY/Youtube hide caption

itoggle caption BanksyNY/Youtube