A lettuce thinner manufactured by Ramsay Highlander removes excess seedlings from the field so that others have room to grow. Just one worker is required to operate the machine. Rachel Estabrook hide caption

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"A œGift for the Grangers" was a recruitment poster for the National Grange printed in 1873. Grange membership around this period was estimated by some to be as high as 2 million. Today it'™s less than 200,000. National Grange of the Order of Patrons of Husbandry hide caption

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A central Illinois farmer plants corn seed into the evening in Farmingdale, Ill. Seth Perlman/AP hide caption

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The June issue of The Oprah Magazine includes an article with details on Oprah Winfrey's new farm in Hawaii. The Oprah Magazine hide caption

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This "pinkhouse" at Caliber Biotherapeutics in Bryan, Texas, grows 2.2 million plants under the glow of blue and red LEDs. Courtesy of Caliber Therapeutics hide caption

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Through the City Land Application of Biosolids Program in Geneva, Ill., the fertilizer supplement is provided to local farmers at no cost. City of Geneva/Flickr hide caption

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Clucking all the way to the bank: A hen models a polka-dot diaper from MyPetChicken.com, a multimillion-dollar business that sells everything from chicken caviar treats to day-old birds. Courtesy of MyPetChicken.com hide caption

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American farms like this iceberg lettuce field owned by Duda Farm Fresh Foods outside Salinas, Calif., are facing a dwindling supply of farmworkers from rural Mexico. Kirk Siegler hide caption

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Cows wait to be milked at a California dairy farm. Justin Sullivan/Getty Images hide caption

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Thick jets of processed sewage arc out 30 to 40 feet from giant moving spreaders at Birmingham Farm in Kansas City, Mo. Frank Morris for NPR hide caption

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Farmers harvest a sugar beet crop in Gilcrest, Colo. Matthew Staver/Landov hide caption

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