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Beef produces 85 kg CO2e per kg of food. Tofu produces 2.9 kg CO2e per kg of food.
(ourworldindata.org)
Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.
As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades:
How much each change to the atmosphere has warmed the world:
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The other comments are right, but if you don't like tofu there are absolutely other options. Legumes in particular are really good for the same kind of role in many dishes, and in my opinion are generally far more enjoyable. Get some mushroom and/or seaweed flavours in there for the umami and butter beans for the texture and all the nutritional goodness and I'm a happy man