Geologist Nick Zentner strides excitedly across the wet sand on his first-ever visit to Oregon’s Agate Beach. But his attention is not on the scenic shore or sparkling waves. It’s on the cliff that ...

In a true study in contrast, the course of a red-hot lava flow oozing down a snowy white mountainside has been mapped out in a newly-released NASA satellite image. Running down the slopes of Mount ...

The Lava River Cave exhaled chilled air. I put on my sweatshirt, despite the hot July day. Though I'd been warned about the sudden drop in temperature to a crisp 42 degrees, it was hard to believe I'd ...

High-resolution photos of lava flows on Mars reveal coiling spiral patterns that resemble snail or nautilus shells. Such patterns have been found in a few locations on Earth, but never before on Mars.