Word: grass
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...grassland being abandoned or converted - along with vast swaths of forest - into profitable cropland for livestock feed. "Much of the carbon footprint of beef comes from growing grain to feed the animals, which requires fossil-fuel-based fertilizers, pesticides, transportation," says Michael Pollan, author of The Omnivore's Dilemma. "Grass-fed beef has a much lighter carbon footprint." Indeed, although grass-fed cattle may produce more methane than conventional ones (high-fiber plants are harder to digest than cereals, as anyone who has felt the gastric effects of eating broccoli or cabbage can attest), their net emissions are lower because...
...small farmers are trying to get the word out about how much more eco-friendly they are than factory farming. "If you suspend a cow in the air with buckets of grain, then it's a bad guy," Harttung explains. "But if you put it where it belongs - on grass - that cow becomes not just carbon-neutral but carbon-negative." Collins goes even further. "With proper management, pastoralists, ranchers and farmers could achieve a 2% increase in soil-carbon levels on existing agricultural, grazing and desert lands over the next two decades," he estimates. Some researchers hypothesize that just...
...many standards, pastured beef is healthier. That's certainly the case for the animals involved; grass feeding obviates the antibiotics that feedlots are forced to administer in order to prevent the acidosis that occurs when cows are fed grain. But it also appears to be true for people who eat cows. Compared with conventional beef, grass-fed is lower in saturated fat and higher in omega-3s, the heart-healthy fatty acids found in salmon. (See pictures of the world's most polluted places...
...everyone is sold on its superiority. In addition to citing grass-fed meat's higher price tag - Shinn's ground beef ends up retailing for about $7 a pound, more than twice the price of conventional beef - feedlot producers say that only through their economies of scale can the industry produce enough meat to satisfy demand, especially for a growing population. These critics note that because grass is less caloric than grain, it takes two to three years to get a pastured cow to slaughter weight, whereas a feedlot animal requires only 14 months. "Not only does it take fewer...
...Allan Savory, the economies-of-scale mentality ignores the role that grass-fed herbivores can play in fighting climate change. A former wildlife conservationist in Zimbabwe, Savory once blamed overgrazing for desertification. "I was prepared to shoot every bloody rancher in the country," he recalls. But through rotational grazing of large herds of ruminants, he found he could reverse land degradation, turning dead soil into thriving grassland. (See TIME's special report on the environment...