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Alan Lapp and Zina Deretsky
9-12 Ann's Yosemite pics
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2008_06 NSF work
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Aztec Sunflowers
Researchers found that sunflowers have been farmed and cultivated for much longer than previously thought in Meso-America - they even predate the Aztecs by quite a bit -- they were shown to have been cultivated back in 2,600 BC!
© Alan Lapp and Zina Deretsky
