Pollan: "There is a moment in the farmers market where the tomatoes are really cheap. The potatoes, the apples are really cheap, and you buy them then, and you know, it's a really good deal... you don't have to wait for Nancy Pelosi or Barack Obama or Collin Peterson to get their act together on this issue. You can act now... what's happening around this country is we're building an alternative food economy. It's being done without virtually any support from the government. And it's burgeoning"