WASHINGTON (AP) — Federal health regulators say a genetically modified salmon that grows twice as fast as normal is unlikely to harm the environment, clearing the way for the first approval of a scientifically engineered animal for human consumption. The Food and Drug Administration on Friday released its environmental assessment of the AquaAdvantage salmon, a faster-growing fish which has been subject to a contentious, yearslong debate at the agency. The document concludes that the fish "will not have any significant impacts on the quality of the human environment of the United States."