Add Yahoo as a preferred source to see more of our stories on Google. While landscaping brings greenery to many people’s minds, rocks are an important part of landscaping, too. Perhaps more accurately ...

This image shows a crater on the floor of Eos Chasma, part of the Valles Marineris canyon system. Craters on Mars are useful for geologists because they provide cross-sections into the subsurface. The ...

In the following days, we will examine the three different types of rocks and how they are formed, what they tell us about the earth, and where you can find them. We’ll also take a closer look at some ...

Become a backyard geologist—in one week National Geographic's Wonder Lessons will teach you how to navigate the stars, spot cloud types, recognize common trees, and identify different kinds of rocks.