Most people do their rock hunting during the day, but you can't find "Yooperlites" until the sun goes down. Yooperlites are rocks that fluoresce in the dark under ultraviolet light. They became known ...

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DULUTH — The rest of the beachgoers, dog walkers and rock hoppers had cleared out Friday night, when Christopher Wenner was just getting started. Bent at the waist, and scanning the rocks on Duluth's ...

Leland, Mich. – What is dismissed in the daylight is considered treasure when the sun sets. While some hunt for the well-known, others know of a different prize that can only be found under the glow ...

MICHIGAN — Erik Rintamaki was searching for rocks on a Michigan beach last summer when he made what he calls a “mind-blowing” discovery. Resting among the thousands of pebbles covering the Lake ...

At some point in the dawn of humanity, a smarter-than-average homo sapien moved a rock away from the fire for warmth and invented the thermal battery. Over a million years later, as humanity struggles ...

LEELANAU COUNTY, Mich. (WPBN/WGTU) -- A group dedicated to combing area beaches for rocks discovered a fluorescent treasure on a beach in Leland. Leland's history has beach combers searching for the ...

HARRISVILLE, MI – These glowing rocks are known to be found along the shoreline of Lake Superior, but there’s another Michigan spot they can be picked up. Rock hunting is a popular activity at ...

Fresno, California (CNN) — At some point in the dawn of humanity, a smarter-than-average homo sapien moved a rock away from the fire for warmth and invented the thermal battery. Fresno, California ...