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hiraethified
Only just seen this article from last year but I think it makes an interesting point:
Treating beef like coal would make a big dent in greenhouse-gas emissions
Treating beef like coal would make a big dent in greenhouse-gas emissions
Relative to other food sources, beef is uniquely carbon-intensive. Because cattle emit methane and need large pastures that are often created via deforestation, they produce seven times as many ghgs per calorie of meat as pigs do, and around 40% more than farmed prawns do. This makes beef a bigger outlier among foods than coal is among sources of electricity: burning coal generates just 14% more ghgs than burning oil, another common fuel.
These figures may understate the environmental benefits of shrinking the cattle population. Methane dissipates relatively fast, meaning that past bovine emissions soon stop warming the planet if those animals are not replaced. Such a change could also raise output of plant-based foods, by making land now used to grow animal feed available for other crops. It takes 33 plant calories to produce one calorie of beef.
The simplest way to cut beef output is for people to eat other animals instead, or become vegetarians. But convincing carnivores to give up their burgers is a tall order. Fortunately, lab-grown meats are moving from Petri dishes to high-end restaurants (see Technology Quarterly). Doing without beef from live cattle is hard to imagine, but the same was true of coal 100 years ago. Cultured meat could play an essential role in staving off a climate catastrophe.