Tiffany Has Plans for a 7,500-Carat Kunzite. Part of the semiprecious stone is to be used in 10 versions of the Bird on a Rock brooch, with another part of the stone to be left in a natural state ...

Here's What'll Happen When Plate Tectonics Grinds to a Halt. A new study says we may only have another 1.45 billion years to enjoy the dynamic action of Earth’s geologic engine.

The December 18 explosion is the region’s fourth in three years—and has fired out 10 times more lava per second than any of the past three at their peaks. Here's what happens next.

Volcanology is the study of the generation and movement of molten rock on Earth and other planetary bodies, primarily through volcanoes and volcanic eruptions. This encompasses the generation of ...