Sun Gold tomatoes can be on restaurant plates in San Francisco in less than 24 hours. Beth Hoffman for NPR hide caption

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First lady Michelle Obama talks to people in the crowd as she picks some fresh produce from a stall at the opening of a new farmers market near the White House on Thursday. Manuel Balce Ceneta/AP hide caption

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Baker Bertrand Houlier with the sweet treats and breads he sells at the Montgomery Farm Women's Cooperative Market in Bethesda, Md. Marisa Penaloza/NPR hide caption

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