To learn why, where, and how earthquakes happen, you need to familiarize your students with the interior of the Earth and a model called plate tectonics. The engine behind the earthquake machine is ...

The journey for volcanic rocks found on many volcanic islands began deep within the Earth. Brought to the Earth’s surface in eruptions of deep volcanic material, these rocks hold clues as to what is ...

For reasons unknown, Earth's solid-iron inner core is growing faster on one side than the other, and it has been ever since it started to freeze out from molten iron more than half a billion years ago ...