Save the Planet—Eat More Beef

Posted on Friday, January 15th, 2010 at 12:04 pm by dpacheco

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Methane emissions from cattle account for more greenhouse gases in the atmosphere than transportation. The obvious conclusion to draw here is that, if you’re really concerned with emissions and climate change, you should cut all beef out of your diet. Just cut it right out.

Well… yes and no.

From Time magazine:

So how can Coleman and Damrosch believe that adding livestock to their farm will help the planet? Cattleman Ridge Shinn has the answer. On a wintry Saturday at his farm in Hardwick, Mass., he is out in his pastures encouraging a herd of plump Devon cows to move to a grassy new paddock. Over the course of a year, his 100 cattle will rotate across 175 acres four or five times. “Conventional cattle raising is like mining,” he says. “It’s unsustainable, because you’re just taking without putting anything back. But when you rotate cattle on grass, you change the equation. You put back more than you take.”

It works like this: grass is a perennial. Rotate cattle and other ruminants across pastures full of it, and the animals’ grazing will cut the blades — which spurs new growth — while their trampling helps work manure and other decaying organic matter into the soil, turning it into rich humus. The plant’s roots also help maintain soil health by retaining water and microbes. And healthy soil keeps carbon dioxide underground and out of the atmosphere.

Compare that with the estimated 99% of U.S. beef cattle that live out their last months on feedlots, where they are stuffed with corn and soybeans. In the past few decades, the growth of these concentrated animal-feeding operations has resulted in millions of acres of 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 they help the soil sequester carbon.

Read the whole article here.

 

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3 Responses to “Save the Planet—Eat More Beef”

  1. Alicia Says:

    I still think that to be the “greenest” you can be you must go vegetarian or vegan. Its a difficult lifestyle at first if you are a carnivore at heart, but its much better for you and the planet.

  2. Jonathan Says:

    The claim is that beef and dairy are pro-climate only if the animals are raised the right way. That’s a big “if”!

    It means, at minimum, 100% grass-fed animals, and even that isn’t clearly sufficient to result in net carbon sequestration in the topsoil. The animals must be on pasture as much as possible, as opposed to eating grass that was harvested and fed to them in a barn or feedlot. The amount of carbon sequestered will depend on many factors such has the pasturing rotation pattern and irrigation pattern. Farmers should absolutely be adopting these methods, but they have to know which methods really work not just vague notions of “grassfed solves our problems.” The ecosystem is a lot more complicated than that.

    So yes, it can be done. Beef and dairy can be produced that is actually a benefit to the atmosphere. But that is some very special beef and dairy and it’s a mistake to broadcast messages that might be interpreted to mean that any beef, even any grass-fed beef, is pro-climate. Only if the message is shared carefully and consistent with the facts will people know what to look for, what to ask of the farmers who raise their food. Otherwise, you could easily end up with people buying the wrong stuff thinking they were doing the right thing, and contributing more rather than less to global warming.

  3. Jonathan Says:

    I just found a really good video that shows some of the concepts behind pastured animals and climate (and soil) health.
    http://www.feasta.org/events/general/2009_lecture.htm

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