Everyone switched off their headlamps and there we stood together in total darkness, inside the San Gabriel Mountains. Yes, inside. I had joined a local caving group in an attempt to understand more ...

It’s one of the premier shows in the mid-west. At the KC Gem & Mineral Show, visitors will see special displays of rocks and ...

It’ll be a snap to identify gemstones once Robert Downs finishes his library of spectral fingerprints for all the Earth’s minerals. Downs is almost halfway there. So far, the associate professor of ...

Test your rock & mineral smarts—are you a Rock Star? Think you know rocks and minerals? Take the Science Trek quiz! Test your smarts on gold, salt, Earth’s oldest rocks, gemstones on Mars, and the ...

Discover how rocks, minerals & the rock cycle change your world. Join the Science Trek team to explore rocks and minerals! Discover how the Earth formed, the three types of rocks, the rock cycle, and ...

Deondre Smith Jr., 9, and his brother Devonne, 7, searched for their favorite rock Friday among thousands for sale at the opening day of the Roxy Ann Gem & Mineral Show in southern Oregon’s Central ...