The impact of food on greenhouse-gas (ghg) emissions can slip under the radar. from respondents, producing plants and meat on farms was a “significant contributor” to climate change was the lowest among ten listed activities. Yet two papers published this year in Nature Food find that food, especially beef, creates more ghgs than previously thought. Forgoing steaks may be one of the most efficient ways to reduce your carbon footprint. 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. Should beef be treated like coal ?

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