Pure Organics

"Once the province of epicures and health nuts, organic food has gone mass market. Americans spent some $16.7 billion on organic food last year, up from $13.8 billion in 2005 — and sales are expected to rise by 20% this year. But some aspects of organic's growing popularity trouble advocates like Mark Kastel, 52, from Rockton, Wis., who is now driving one of the food industry's biggest debates: does organic food's industrialization threaten its purity?"

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