What FACTS ABOUT ROCKS do you know? They are abundant on earth, and yet little is known about them. These facts will increase your knowledge of the rocks.

The facts thus acquired, and especially the fertile conception of “petrographical provinces,” each with its suite of igneous rocks having a community of characters which bespeaks a common ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. Why don’t rocks burn? – Luke, age 4, New Market, ...