This hands-on, guided-inquiry activity helps students to understand the geometry of lunar and solar eclipses by creating a physical, proportional model of the Earth and Moon system and observing ...

Rammed earth is one of the oldest methods of constructing walls and still holds great potential for modern earth construction. One aspect of this potential is the gift of its colors and layers, which ...

A new 3-D model of the Earth will now let scientists pinpoint the sources of earthquakes and explosions around the globe more accurately than ever, researchers say. The new model of the Earth's mantle ...