How Many Continents Are There? By John Carl Villanueva November 19, 2009 Rising Temperatures Could Shut Down Plate TectonicsMars Once Had Plate TectonicsUnderstanding Plate MotionsPlate Tectonics - Juan de Fuca Ridge - Juan de Fuca SubductionPlate TectonicsVolcanoes, Hot and Cold John Carl Villanueva Previous Article ← Black Hole Drive Could Power Future Starships Next Article Large Hadron Collider Could Re-Start This Weekend →