This is the best summary I could come up with:

Tyson claims that its new “Climate-Smart Beef” program, to be supported with taxpayer dollars, has managed to cut 10 percent of the greenhouse gas emissions from a tiny fraction of its cattle herd.

The 1.5 billion cows farmed worldwide for cheeseburgers and ice cream sundaes each year accelerate climate change in three main ways: they eat grass and/or grain, like corn and soy, causing them to burp out the highly potent greenhouse gas methane; they poop a lot, which releases the even more potent nitrous oxide, as does the synthetic fertilizer used to grow the grain they’re fed; and they take up a lot of land — a quarter of the planet is occupied by grazing livestock, some of which could be used to absorb carbon from the atmosphere if it weren’t deforested for meat production.

Among other practices, Tyson also lists “pasture rotation,” which entails moving cattle around more frequently with the goal of allowing grass to regrow, which can provide a number of environmental benefits, but many climate scientists are skeptical it can meaningfully reduce emissions.

When asked what benchmark the USDA uses to approve a 10 percent emissions reduction claim, the agency again said I would need to file a FOIA request, and didn’t answer questions about its verification process in time for the deadline for this story.

Meat and dairy production account for at least 14.5 percent of global greenhouse gas emissions, leading many environmental scientists to conclude that eating more plant-based meals is one of the best actions people can take to fight climate change, and that governments could do much more to steer us in that direction.

In a recent online survey, conducted in partnership with market research consultancy firm Humantel, Vox polled consumers about which parts of the food sector they think contribute most to climate change.

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