Not all meat is created equally. According to the Environmental Working Group lamb, beef, pork and cheese have the greatest impact on the enviroment. additional, these meats are the highest in fat thus worst for your health. Best meat choices are eggs, wild caught fish, and organic poultry. Best for the enviroment are vegetarian options, however vegetarian proteins are not as easily absorbed by the body, and most are not complete proteins. If you go the vegetarian route to get your protein be sure to mix your sources for example beans and rice, a bean spread on a wheat source. Quinoa, and soy are good sources of complete proteins but again are not as easily absorbed by the body; make sure you get what you need.