The hidden twin of chemical pesticides is chemical fertilizers. Few of us know anything about these, but organic certification does not include them. Farmers may add many chemical compounds to their fields and still be considered "organic," did you know? The products are derived from industrial waste (e.g., scraped from refinery chimneys) but are considered "safe" when sprinkled over acres of soil. While it's true that soil contains trace amounts of toxic elements, does selling toxic waste as fertilizer add up to the same thing? The book Fateful Harvest by Seattle Times reporter Duff Wilson is a tremendous exploration of this reality (HarperCollins 2001), but it has strangely gone nowhere, in spite of its horrifying revelations.