This document discusses the environmental, health, and ethical impacts of eating animal products versus a plant-based diet. It notes that animal agriculture is a major contributor to greenhouse gas emissions, water pollution, deforestation and species extinction. A plant-based diet requires fewer resources and could feed more people. However, government subsidies encourage overproduction of corn and soy which are fed to livestock. Factory farming practices are described as inhumane. Health guidelines recommend plant-based diets, which studies find reduce risks of chronic diseases. Resources for adopting a vegan diet emphasize fruits, vegetables, grains and legumes.