Buy rocks, fossils, minerals, and crystals. We specialize in Natural Carboniferous/Pennsylvanian PA fern plant fossil display slabs excavated from Pennsylvania coal mines. Forum, links, more.

An earth science resource about fossils and geologic history. Find articles on fossils, fossil formation and geologic time, with activities for kids, and lesson plans.

A tutorial explaining Geographic Positioning System (GPS) receivers in simple terms.

Loads of fun and exciting kids science experiments and science projects for all ages. Materials used are items found around the house including recycled products. Easy step by step instructions to follow.

Detailed stages of the life cycle of a butterfly and moth. Camouflaged and transparent butterflies and moths. Butterfly attractions and projects to enjoy. Listing of different butterfly and moth species.

A global warming resource. Fighting the global warming is neccesary, but knowing the cause and it's effects is even more useful. The site is filled with facts, links and a forum.

About the climate change. Cover controversial topics that haven't been discussed before, bringing up new ideas and solutions to our abrupt climate issues.

Thousands of volcanoes with their statistics and information:status,height,type,location,latitude etc, all for free!