What's inside Earth? Why do we have earthquakes? What causes the ocean tides? These questions and many others are examined as students study Earth from the insi

Follow Gil around the globe, as he makes his amazing spiritual journey from corporate America to the depths of South India to the holy city of Jerusalem. Join h

"The Umbria-Marche Apennines are entirely made of marine sedimentary rocks, representing a continuous record of the geotectonic evolution of an epeiric sea from

A two-volume steampunk extravaganza. Accompanied by Edgar Allan Poe, a nineteeth-century farm boy travels through the vast interior of the Hollow Earth to prese

Planet Earth has evolved over hundreds of thousands of years. The Earth that we know today has a wide range of geographical features, an abundance of resources