The far side of the moon is hiding evidence of an enormous ancient volcano. But even though researchers are sure the volcano was there, they remain mystified about how it could have formed. For more ...

The moon could contain massive slabs of ice at its north and south poles formed from the steam of vast ancient volcanoes, according to new research. If the new predictions are correct, it opens up the ...

MOUNT ST. HELENS -- For the first time in 18 years, lava has broken the surface of this restless volcano, pushing its way out Monday afternoon in an inky gray spine of crystallized molten rock from ...

Scientists have wondered what happens to the organic and inorganic carbon that Earth’s Pacific Plate carries with it as it slides into the planet’s interior along the volcano-studded Ring of Fire. A ...