Vance Holliday jumped at the invitation to go do geology at New Mexico's White Sands. The landscape, just west of Alamogordo, looks surreal—endless, rolling...

Mount Lewotobi Laki Laki volcano in south-central Indonesia erupted Tuesday, spewing towering columns of hot ash into the air. Authorities raised the eruption alert...

Imagine a lush forest with tree-ferns, their trunks capped by ribbon-like fronds. Conifers tower overhead, bearing triangular leaves almost sharp enough to pierce skin....

The planet Mars is home to thick layers of clay that can span hundreds of feet. Since they need water to form, these outcrops...

Asteroids colliding with Earth might seem farfetched, but the planetary threat is real. Just this year news broke of an asteroid with a 1%–2%...

A giant, strong-jawed salamander once tunneled through ancient Tennessee soil. And thanks to a fossil unearthed near East Tennessee State University, scientists now better...