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 ...

Nitrogen gets around on Earth. The element moves between the atmosphere, oceans, land, crust, and mantle of the planet. But models of this nitrogen cycle are in need of a major update, a group of ...

Discover how rocks, minerals & the rock cycle change your world. Join the Science Trek team to explore rocks and minerals! Discover how the Earth formed, the three types of rocks, the rock cycle, and ...

MACK SLACK: Look at all you little rocks. Sitting there looking up at me, not knowing where you came from or what you're gonna be. Well, let me teach you the oldest story on the planet. The rock cycle ...

In the 45°C heat of the midday April sun, I swing my sledgehammer into the terracotta-varnished lobes of pillow basalt ...

Sedimentary rocks are made up of pieces of older rocks (igneous, metamorphic, and sedimentary) and organic remains (shells, bone, etc.). When rocks break apart from erosion they are transported by ...