(Paul Fraughton | Tribune file photo) Waterfowl wade in the waters of The Great Salt Lake earlier this year. A leading federal research says new pollution controls should make strides in reducing mercury — particularly the toxic form — in the natural environment. In 2003, researchers measured some of the highest concentrations anywhere in the Great Salt Lake. (Leah Hogsten | Tribune file photo) Jason Henrie, of Murray, walks on Silver Sands Beach of the Great Salt Lake in 2010. New federal environmental rule should help reduce mercury in the lake and other water bodies, according to researcher David Krabbenhoft. (A sunset on Antelope Island Monday, January 11,2010 photo:Paul Fraughton/ The Salt Lake Tribune)