Volcanologists keep wary watch on Sicily's restless peak.
Ancient crystals reveal Earth's earliest era.
An innovative twin-satellite mission is watching water move across our blue planet.
Hot times in Earth's past lend insight to future warming.
A new hypothesis of mountain growth challenges plate tectonics.
A digital landscape of the American Southwest.
What could happen if global warming melts Greenland completely?
Geologists monitor Yellowstone National Park's volcanic system.
How tsunami researchers are trying to get ahead of the next big wave.
Glaciologists are racing to core the largest tropical ice cap before it melts.