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sweet potatoes
Jan 23, 2013 — The genes of the root vegetable have a juicy story to tell of trans-oceanic adventure. A DNA analysis of sweet potatoes adds evidence to the theory that ancient Polynesians visited South America long before the Europeans arrived.
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Aug 15, 2012 — In Africa, a nutrition success story: Swapping orange sweet potatoes for white ones is improving the health of children by boosting vitamin A levels. Researchers are now trying to duplicate their success with other crops.


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