The beaches at Grand Marais are excellent hunting grounds for the ancient Lake Superior agate, a semi-precious stone made up of concentric circles of microcrystaline quartz reddened by iron. Here’s ...

Craig Prudhomme is a former naturalist and has been involved in planning Moose Lake’s Agate Days weekend for 18 years. Moose Lake is home to the largest agate on record. It weighs 108 pounds. “In 1969 ...

MINNEAPOLIS — Lake Superior is the largest freshwater lake in the world — a sea known for its pristine cold water. But in a warming world, that's changing. Before dawn, a crew boards the Blue Heron, ...

Lake Superior, the largest freshwater lake in the United States and a critical natural resource, experienced its lowest water levels in a decade in 2024. According to the National Oceanic and ...

Appears in exhibition catalog as entry no. 63 (Sale info: TO BE DISTRIBUTED). No. 7. 1847. June 1. The American Art-Union: Plan of the Institution, List of its Officers, and Catalogue of Paintings, ...