Great Lakes Echo: Long valued for biological diversity and flood control, Great Lakes coastal wetlands are now seen as a tool to suck up and store excess carbon dioxide. Its an important function as researchers seek to blunt climate change caused by that greenhouse gas. Wetlands are at the top of the list of best systems for sequestering carbon on the landscape, said William Mitsch, professor emeritus at Ohio State University and director of the Everglades Wetland Research Park at Florida Gulf Coast University....