A subduction zone is a collision between two of Earth's tectonic plates, where one plate sinks into the mantle underneath the other plate.
Reference The Mariana Trench is more than 7 miles (11 kilometers) deep. Although it is a toxic environment, some creatures of the deep thrive there.
Continental drift was Alfred Wegener's theory proposing continents move position on the Earth's surface.
Aquifers are underground layers of rock that are saturated with water that can be brought to the surface through natural springs or by pumping.
Faults in the Earth are categorized into three general groups based on the sense of slip, or movement, that occur along them during earthquakes.
There are better things to worry about than a supervolcano exploding from the bowels of Yellowstone National Park.
Lightning flashing in the sky during volcanic eruptions stems both from ash and from ice, scientists find.
The roar of a volcano erupting on a remote Alaska island reveals important details about the blast, such as its size and location, a new study reports. And now scientists are listening.
The weird weather pattern that hatched California's ongoing drought is becoming more common, and could bring more extreme dry spells in the future, a new study finds.
Up to 12 massive volcanic blasts occurred between 8 million and 12 million years ago in Idaho's Snake River Plain, leading up to today's Yellowstone supervolcano, new research reveals.
Can you outrun a supervolcano? New evidence from an ancient eruption suggests the answer is a surprising yes, at least for some of the best athletes. And if you have a car, you're golden as well.
A new study reveals how Greenland's unstable ice age climate was influenced by Atlantic Ocean currents.
Strange and sudden earth movement that caused a gaping gash and a deep booming sound in a Michigan forest is being explained as a "pop-up" in the bedrock.
Mother Nature can't take the blame for the recent string of record-breaking heat waves, a new study finds.