New Research by Gidon Eshel Featured in the Washington Post

A new study led by Gidon Eshel, research professor of environmental and urban studies at Bard College, which found that grass-fed beef did not hold a carbon emissions benefit compared to grain-fed, was featured in the Washington Post. Some ranchers and conservationists have posited that grass-fed beef is better for the planet than grain-fed cows—which have been shown to produce lower methane emissions because they grow faster and are slaughtered younger—by arguing that grazing fields store carbon underground instead of releasing it into the atmosphere. However the study, which was published in the Proceedings of the National Academy of Sciences, used newly available US data comparing pasture where cows were grazing to grass that had been left undisturbed and factored the carbon storage in the soil into the overall carbon footprint of grass-fed beef, and compared this to the emissions from grain-fed systems. It showed that the emissions per kilogram of protein of even the most efficient grass-fed beef operations were 10–25% higher than those of grain-fed beef. “Accounting for soil sequestration lowers the emissions, and makes grass-fed beef more similar to industrial beef, but it does not under any circumstances make this beef desirable in terms of carbon balance,” Eshel told the Post. “That argument does not hold.”

Post Date: 03-18-2025