A gigantic bulge in the north rim of the Yellowstone caldera is the latest sign of volcanic activity in the national park.

Yellowstone National Park, renowned for its geothermal features and volcanic history, is beginning to show signs of renewed activity after remaining inactive for approximately 160,000 years. Recent ...

The Moon has long been treated as a geologically dead world, a frozen relic that finished erupting billions of years ago. A wave of new data is now challenging that assumption, pointing instead to a ...

The Taftan volcano in Iran frequently expels gas, but has not erupted. A volcano that has been dormant for hundreds of thousands of years could be gearing up for a massive explosion, according to new ...

Carbon dioxide emissions from rising magma is one of the earliest signs that a volcano is waking up, but measuring it directly is notoriously difficult. Reading time 2 minutes Forecasting volcanic ...

The 1980 eruption cycle made Mount St. Helens one of the most famous and now best-monitored volcanoes in the Cascades. But it is far from the only volcano in the range. From southern British Columbia ...

It is widely believed that Earth's atmosphere has been rich in oxygen for about 2.5 billion years due to a relatively rapid increase in microorganisms capable of performing photosynthesis. Researchers ...

The Hawaiian Volcano Observatory is part of the U.S. Geological Survey, the science agency of the U.S. Department of Interior. Our job is to obtain and share science-based information about the ...

A volcano that has been dormant for hundreds of thousands of years could be gearing up for a massive explosion, according to new research. Scientists have measured signs of unrest at the Taftan ...