Wondering whether itas worth it to splurge on the locally raised beef? What about those organic carrots? New in the Chelsea Green Guides series, "Sustainable Food: How to Buy Right and Spend Less" helps the average shopper navigate the choices, whether strolling the aisles of a modern supermarket or foraging at a local farmers market.This down-to-earth, casual guideasmall enough to be slipped into your pocketaanswers these and other questions for the shopper: What are the differences among organic, local, fair-trade, free-range, naturally raised, and biodynamic foods?How affordable is it to subscribe to a CSA farmaand what are the advantages?Is it better to choose wild Alaskan salmon at $18.99, or the Chilean farmed fish at $11.99?What cooking oils can be sustainably sourced?How can a food co-op increase access to, and affordability of, healthier, Earth-friendly foods?Where can you find sustainably produced sugar, and are there any local replacements for sweeteners from faraway lands?What do the distinctions between shade-grown and trellised coffee mean?Is shark okay to eat? How about mackerel?Why is the war on plastic bags so important?Sustainable eating just got easier.