Food is a part of everyone's lives -- and it affects many different things, including your individual health, the health of the environment, and the health of animals. If you want to see how your diet scores on these three factors, click here. The considerations that go into each score include:
Health: saturated fat, cholesterol, dietary fiber, calcium, vitamins, minerals, phytonutrients, correlations of foods with cancer, and heart disease
Environment: air and water pollution from manure, cattle belching, production and overuse of fertilizer, depletion of groundwater, unnecessary use of land to produce feed grains and soil erosion, and over-grazing
Animal welfare: castration, hot-iron branding, debeaking, detailing, cramped cages and feedlots, cattle feed high in grain, and inhumane shipping and slaughterhouse practices
Also on the Center for Science in the Public Interest's site is the Eating Green Calculator, which is a more simplified look at what you eat each week. It gives you stats on what it takes to fuel your diet -- like how many acres of grain and grass are needed for animal feed, the pounds of pesticides and fertilizer used, and the amount of manure created by animals you eat.