When populations of tiny aquatic organisms called cyanobacteria (formerly known as blue-green algae) explode, their toxic ...

Lake Erie is more than half covered by ice, thanks to our frigid snap. The Great Lake was almost entirely liquid on Jan. 4, when temperatures began dropping. By Jan. 8, the surface of the western ...

Stunning satellite imagery reveals the aftermath of a deep freeze in Chicago, showcasing ice formations on Lake Michigan and ...