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9 eco-friendly diets

By: Julie Knapp on Jan. 15, 2010, 11:47 a.m.
Vegan Diet

Photo: ammanteufel/Flickr

8 of 11

Vegan Diet

Taking the extra step from vegetarian to vegan doubles the impact on your carbon footprint — reducing it by about two tons. In addition to meat, vegans consider dairy, eggs and other animal-derived ingredients or those processed using animal products off limits, too.