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"Tehuacan Mexico is known as the \"heartland of Mexico's denim industry,\" a heart that sometimes launders enough jeans to bleed blue dye and bleach into rivers used to irrigate corn fields. And, no, this is not how blue corn tortillas came about. As"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/style/dye-me-a-river.html>