The average US consumer today requires more than 2.5 acres (over two football fields) of land each year to sustain his or her current diet. That number decreases dramatically as you reduce meat consumption and add in more vegetables. Three of the vegetarian diets examined in the study would use less than 0.5 acres of land per person each year, freeing up more land to feed more people.
Using biophysical simulation models to compare 10 eating patterns, researchers found that eating fewer animal products will increase the number of people that can be supported by existing farmland.
What are you going to do to leave a better earth for the next generation?