Some of the unusual rocks carry stories about water on Mars. One has hints of long-gone microbes. All tell of a dynamic, complex planet.

The name “Purgatory Chasm” sounds like somewhere you’d send your in-laws when they overstay their welcome, but this geological wonder in Sutton, Massachusetts is actually heaven for adventure seekers ...

That’s Devil’s Den State Park in West Fork, Arkansas – a geological wonderland tucked into the Boston Mountains that somehow ...

Beneath the crust of North America, scientists have found that the deep roots of the continent are slowly dripping away in ...

The Perseverance rover has discovered an extraordinary rock on Mars. It features a surprising structure, and its origin ...

The Perseverance rover has discovered an extraordinary rock on Mars, featuring a surprising structure that remains a mystery ...