After wasting less food and eating less meat, all other changes a person might make are marginal, experts said, among them eating locally, organically, and seasonally. Moreover, the climate impact of those food choices is in many cases contradictory. “I work in food, and it’s confusing for me,” Cabrera, of the NRDC, told me. “Is this lettuce better than this lettuce? Consumers are faced with so many choices, and it is really hard to know.”

Humanely raised, local meat, for instance, can produce more emissions than meat coming from a concentrated industrial operation, Clark told me. Cows

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