Many meteorites will have what is called a fusion crust, which is a thin, dark rind that results from the extreme heat and pressure the rock had to go through to get to Earth. As such, these rocks ...

Microbes - alive and thriving -- have been found sealed within a fracture of 2-billion-year-old rock beneath Earth's surface.

But the Afar's timeless visage hides its true nature. Below the surface, Earth's rocky rind is ripping apart, and underground chambers of magma are fueling 12 active volcanoes as well as steaming ...