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 ...

In 2017, gem and mineral dealer Erik Rintamaki stumbled upon glowing rocks along a beach near Lake Superior. The rocks, which looked normal at first, fluoresced brilliantly underneath UV ...

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 ...

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 ...

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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 ...

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 ...

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 ...

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 ...