Researchers have uncovered a complex subglacial system miles under the ice where rivers larger than the Amazon link a series of "lake districts," which may teem with mineral-hungry microbes. This watery environment may be more than one-and-a-half times the size of the United States, scientists say, which would make it the world's largest wetland... Studinger's research focuses on "recovery lakes," part of a a series of cascading lakes found earlier this year under the ice sheet. The lakes... ebb and flow as they empty into the polar sea. They stay fluid because the ice sheet above acts like a gigantic...