This image is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. When we look at a rock, we often just focus on its size and appearance. Is it light or heavy? Dark or ...

Rocks and minerals are closely related, but there are fundamental differences between the two. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Samples from slag cliffs in England reveal industrial waste products can turn into rock in less than four decades, challenging assumptions about how rocks form. When you purchase through links on our ...