Source: ‘Low carbon’ beef: As nonsensical as ‘low cancer’ cigarettes, Geoff Horsfield, Environmental Working Goup, 26 January 2022

The USDA in November approved a low carbon label for beef produced through methods that marginally reduce emissions by 10 percent from the industry baseline.
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Even a completely hypothetical 50 percent reduction in greenhouse gas emissions per gram of protein would leave beef as the worst climate change choice.
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No food produces more greenhouse gas emissions than beef.