New research suggests an ancient hotspot helped shape the Great Lakes, challenging traditional formation theories.

From the Great Lakes Environmental Research Laboratory daily ice graphs, here current estimates of ice coverage percentages for the five Great Lakes as of Jan. 23: Lake Superior: 8.19% Lake ...

North America is home to the Great Lakes—Huron, Ontario, Michigan, Erie, and Superior—spanning the borders of several U.S. states and Canada. These vast freshwater bodies are renowned for ...