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A global switch to more veggie-focused diets could reduce greenhouse gas emissions by two thirds and save 8 million lives by 2050.[40]

Red meat is responsible for 10 to 40 times as many greenhouse gas emissions as veggies and grains. [41] Beef creates up to 105kg of greenhouse gases per 100g of meat, compared to tofu which produces less than 3.5kg.[42]

Put simply, cows create a lot of methane – basically they fart and burp a lot. Feeding cows grass is a very powerful way to create greenhouse gases. And dairy is not off the hook either. It takes about 1,000 litres of water to make 1 litre of dairy milk, compared to 297 litres for the same amount of soy milk.[43] The least sustainable plant-based milk is significantly more sustainable, from the perspective of emissions, land use and carbon footprint, than the most sustainable dairy milk.[44]