Rex the Dino Detective helps answer questions about rocks, fossils and minerals. Also offers tips for planning your own field trip. By The Children's Museum of Indianapolis.

The Smithsonian Museum of Natural History presents articles about gems, minerals, rocks, mining, earth movements, volcanoes, and materials from other planets in our solar system.

Offers interviews with a scientist and amazing adventure stories. Learn which rocks or minerals are in items from the kitchen and read interviews with kids.

Learn about earth structure, atmosphere, natural energies, water resources, living things, climate and cycles. Page includes photos and explanation of terms.

Explains how layers of the Grand Canyon were formed over a period of about 2 million years. Many illustrations. Gives a couple different theories about some of the details.

The Kentucky Geological Survey offers recipes for appetizers, desserts and other food that help to explain earth-science concepts.

Learn how Biology, Geology, Hydrology, and Geography can help us understand our changing world.

Explore a photo gallery of gems, volcanoes, rocks, minerals and meteorites. Offers research, collections and exhibits.

Introduces four basic types of disasters unique to Hawaii and information on how individuals can better prepare themselves should they occur.

Learn about Yellowstone National Park with games and activities like the Animal Alphabet Book, the Yellowstone Coloring Book and a Scavenger Hunt.