How much of global emissions come from food?

Food systems account for roughly a quarter to a third of global greenhouse gas emissions, and animal products supply about 57 % of food-system emissions while providing around 18 % of calories.

What is the single most effective dietary change for the climate?

Reducing beef and dairy. Per gram of protein, beef emits on the order of twenty times the greenhouse gases of legumes.

Planet

Meat, dairy and the climate crisis

Life-cycle assessments, methane's short-lived but potent warming, land-use carbon opportunity cost, and the modelling behind dietary shift scenarios.

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Questions this hub answers

How much of global emissions come from food?: Food systems account for roughly a quarter to a third of global greenhouse gas emissions, and animal products supply about 57 % of food-system emissions while providing around 18 % of calories.
What is the single most effective dietary change for the climate?: Reducing beef and dairy. Per gram of protein, beef emits on the order of twenty times the greenhouse gases of legumes.