Beta-Carotene, as far as I?ve known since I slogged through 8th grade Biology, is a pigment that gives sweet potatoes and carrots their color. But since it's used as a food dye and plenty of doctors recommend it as a supplement, it?s also the basis for a booming synthetic farming business?one we rarely see, since it?s based in rural Australia. But these photos, by Australian photog Steve Back, give us an unusual glimpse inside the world's largest ?-Carotene farm.
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