The single and biggest way to reduce environmental impacts is to reduce the consumption of meat and dairy. Farming for meat and dairy take up 83% of farmland, but only provides 18% of calories. Farmland can be reduced 75%, if meat and dairy consumption was eliminated. Meat and dairy farms are responsible for 60% of agriculture’s greenhouse gas emissions. 

A study published in the journal Science, assessed the impact of animal farms on land use, climate change emissions, water usage and pollution, and air pollution. It was found farming negatively affected all those aspects. Beef was found to have the most negative impact. It produces more greenhouse gas and consumes more land than any other food source. Even the lowest impact beef farms produce six times more greenhouse gases and thirty-six times more land.