A pretty bit of blue zircon dating back billions of years to the formation of the Earth's crust may be one of the oldest pieces of the planet.
Scientists have taken new measurements that suggest that the core of the Earth burns at 6000 degrees Celsius — as hot as the surface of the sun.
How are these unusual minerals extracted from the ground and why is that process an environmental risk? CNET's Jay Greene explains.
Fifty years after the first attempt, scientists aim to retrieve samples from the Earth's mantle. Such a feat could provide a trove of information about our planet's origins and history.
NASA says its Cassini spacecraft has discovered the best evidence yet for a large salt water reservoir beneath the icy crust of Saturn's moon Enceladus.
Continents floating on hot molten Earth's core.
NASA works with the U.S. Geological Survey to track and understand the Earth's restless crust. This video from NASA and the Jet Propulsion Laboratory traces the progress of seismology since the 1906 quake.
Simbol Mining aims to extract minerals and metals from brine deep beneath the earth's surface.
The rare and colorful lights sometimes seen before major earthquakes could come from electric charges in certain types of rock.