Frankenfish could be on your dinner plate by the end of the year. On December 21, at the very end of the last business day before Christmas week, the US Food and Drug Administration (FDA) quietly released its environmental assessment that found "no significant impact" from the controversial AquaBounty AquaAdvantage transgenic salmon. We're now in a 60 day comment period that ends on February 25, at which time the FDA is widely expected to initiate formal approval. What is the rationale behind genetically engineered salmon? Why have scientists spliced genes from an eel-like creature called the...