The rocks on Earth are constantly changing due to many different processes. There are three main types of rock, with rocks changing between each type over millions of years. This rock recycling is a ...

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 ...

A few months ago I had the equivalent of a science education “mini-rant” in Forbes. I thought about K-12 class lessons about the water cycle, and the glaring omission in all of them. If you are old ...