Great Lakes ships may be getting natural gas makeovers. Researchers with the Great Lakes Maritime Research Institute will soon study converting steam-powered ships to natural gas, using either compressed or liquid natural gas as primary fuel sources. The team is also working with the Lake Michigan Carferry Service to determine the possibility of converting the controversial S.S. Badger to natural gas. From mid-May through mid-October, the S.S. Badger travels between Manitowoc, Wisc., and Ludington, Mich., every day. The monster vessel is the only coal-fired steamship operating in the U.S. and has come under fire from environmentalists because, as Echo reported, it emits nearly four tons of toxic coal ash into Lake Michigan with every trip and has been under an Environmental Protection Agency order since 2008 to fix its pollution problem by 2012.