Is mercury in fish becoming a serious health threat to American consumers?  Well according to the Sierra Club, the answer is “yes” as it claims emissions from coal powered plants are contaminating our lakes and fouling our fish.  But according to the Center for Science and Public Policy, very little mercury, less than 1 percent, is emitted from coal plants while the overwhelming amount comes from Mother Nature.  In addition, studies such as those conducted in the Sechelle Islands, where residents eat potentially dangerous fish in far greater quantities than here in the U.S., fail to show any detectable risk to their consumers.  Sounds like this mercury and fish connection is a slippery one indeed.