Author: Ava Sawyer

Sedimentary rocks are all around you. They form from soil, gravel, dust and other sediment. This type of rock is often affected by wind and water e...

The Rocks series takes an in-depth look at the three types of rock-sedimentary, igneous and metamorphic as well as fossils. Find out how each rock ...

Pollution and mining for resources have negatively impacted Earth. Non-renewable resources will one day run out. Then what? In this title readers w...