With water fluoridation of drinking water under the spotlight in the US, we look at why some countries choose not to add the ...

The kids loved watching them duck into their tunnel ... A laccolithic butte of igneous rock sits in the Bear Lodge Mountains. Devils Tower stands 1,268 feet above the nearby Belle Fourche River.

Stuck deciding between granite and marble for your new kitchen countertops? We asked some experts for their insight on ...

This morning’s Duplex reminded me of a news story I was sure I’d clipped, but can’t find. A business professor at the ...

A new study led by University of Wisconsin-Oshkosh geologist Timothy Paulsen and University of Colorado Boulder ...

Sodalite forms in igneous rocks that crystallized from sodium-rich, silica-poor magmas. That’s how it got its name—soda + lithos, or “sodium stone," according to Rock Your World gem & art ...

The scientists dated the rocks using zircon, a mineral in gneiss, the GSA said. "Dating zircon grains using ... techniques is now celebrated as the optimal method for determining when igneous ...

Smithsonian researchers trekked to a remote site in northern Canada to collect four-billion-year-old rock samples that could ...

Granite and other rocks made from recycled magma Igneous rocks, which form from magma (which is called lava when it erupts on the surface), aren’t anything special in our solar system.