In response to “Pesticide Linked to Brain Abnormalities,” Alex makes an important point about eating organic.
As you point out, the highest rates of exposure to these pesticides happen in agricultural areas. Women farmworkers, who are often disadvantaged in numerous other ways including the lack of fair labor practices, are especially vulnerable. By choosing organic foods you are not only limiting your own exposure to but also supporting the rights of women farmworkers, who are also mothers, not to be exposed to dangerous pesticides in their workplace.
To learn more about these issues and find more ways to support farmworker justice, see organizations like the Pesticide Action Network: http://www.panna.org/issues/frontline-communities/farmworkers