Clues to our planet’s dramatic past are in the layers of rocks we might overlook. A great guide shows why they deserve our ...

It’s an abnormally hot day in September and I’m standing in a cattail marsh in eastern Wisconsin, trying to change the way my students view the world. They’re all distracted—by the heat, homesickness, ...

This is a preview. Log in through your library . Abstract Layers and lenses of stones are common in the soils of the southeastern states. These accumulations were formerly termed stone-lines and ...

I love the Grand Canyon, both personally (because of all the good memories I have of my adventures there), and as a scientist. I first saw it in the early summer of 1981 when I went on a six-week-long ...

The layers of Earth provide geologists and geophysicists clues to how Earth formed, the layers that make up other planetary bodies, the source of Earth's resources, and much more. Modern advances have ...

Higher layers may be deposits of wind-blown dust after a great drying-out on Mars. "Mount Sharp is the only place we can currently access on Mars where we can investigate this transition in one ...

On September 11, 2025, a groundbreaking study showed that scientists can detect unusual ice phases that do not exist on Earth ...