The Environmental Footprint of Food
Food production accounts for approximately 26% of global greenhouse gas emissions, 70% of freshwater withdrawals, and the vast majority of terrestrial biodiversity loss and soil degradation. The environmental footprint of what we eat is, for most individuals, larger than the footprint of how we travel or what energy we use at home. Understanding the major drivers of food's environmental impact enables more effective personal and collective action.
Animal products — particularly beef and dairy — have dramatically higher land, water, and emissions footprints than plant foods. Beef produces approximately 60 kg of CO2 equivalent per kilogram of protein, compared to 3.5 kg for legumes. Land use for animal agriculture (including feed crops) accounts for roughly 80% of agricultural land use while providing only 20% of global calories. This extreme inefficiency — channeling plant calories through animals before eating them — is the primary driver of food-related emissions and land conversion. Shifting dietary patterns toward more plant-based foods is the single highest-impact dietary change individuals can make, regardless of whether food is local or organic.
"Food miles" — the distance food travels from production to consumer — is often cited as a primary environmental concern but is actually a minor contributor to food's footprint in most cases. Transportation typically accounts for only 5–11% of food's lifecycle emissions; production method and food type dominate. Local beef produces more emissions than imported tofu. However, local food systems matter for reasons beyond emissions: they support regional agricultural economies, preserve open land near population centers, maintain food security and supply chain resilience, build consumer connection to food production, and can support more ecologically diverse and smaller-scale farming practices.