Tucked deep beneath Tennessee’s Smoky Mountains, the Lost Sea, America's largest underground lake.

The U.S. Army Corps of Engineers stands by its prediction that the water levels in the Great Lakes will continue to rise ...

Looking for amazing state parks in Wisconsin that rival national parks? These 9 natural treasures offer breathtaking scenery and peaceful experiences without the long lines and pa ...

By Cheryl Thiede Half the adventure of our annual getaway to Grand Marais, Minnesota, is the journey. My mom, sister and I go ...

DULUTH, Minn. (AP) — An Alaska brown bear at the Lake Superior Zoo in northeastern Minnesota has a gleaming new ...

The risk of harmful algal blooms can be reduced. The biggest drivers of the increase are farm fertilizer and climate change.

An Alaska brown bear at the Lake Superior Zoo in northeastern Minnesota has a gleaming new silver-colored canine tooth in a ...

Creature Crowns, an Idaho company crafted the world’s largest crown for an Alaska brown bear at the Lake Superior Zoo after a ...

An Alaska brown bear at the Lake Superior Zoo in northeastern Minnesota has a gleaming new silver-colored canine tooth in a ...

The hour-long procedure was done by Dr. Grace Brown, a board-certified veterinary dentist who helped perform a root canal on ...

Lake Superior's shoreline offers boaters a chance to experience miles of colorful sandstone cliffs and long stretches of sandy beaches. Boats and motors of any size are permitted on Lake Superior ...