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 ...

Planet Earth is a unique place: it's full of unusual things happening every moment. Right now as you're watching this video, ...

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 ...

An error has occurred. Please try again. With a The Portland Press Herald subscription, you can gift 5 articles each month. It looks like you do not have any active ...

When exposed to UV light, the sediment in this piece of volcanic rock phosphoresces, glowing green for several seconds. This brief “glow in the dark” effect reveals the sediment is made out of calcite ...

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 ...

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 ...

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 ...

PANOLA COUNTY, Texas (KLTV) - Robert Lewis Jr. was mowing his grass near Carthage when he nearly ran over what appeared to be ...