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What is the risk of a volcano erupting? To answer this question, scientists need information about its underlying internal structure. However, gathering this data can take several years of fieldwork, ...

New data is used to map a volcano-like feature discovered this fall by science teams aboard the U.S. Coast Guard Cutter Healy, a polar-class icebreaker used for Arctic research. The scientists found ...

Mexico’s Popocatépetl volcano has long drawn attention for its size, constant activity, and glowing plumes of smoke and ash, yet for decades scientists did not fully understand what was happening deep ...

Mount Fuji's ground is swelling up to two centimeters during heavy rains, a phenomenon not linked to magma. Scientists ...

A deeply eroded giant volcano, active from ancient through recent times and with possible remnants of glacier ice near its base, had been hiding near Mars' equator in plain sight. Its discovery points ...

Scientists working alongside the U.S. Coast Guard have discovered a 1,640-foot-tall (500 meters) structure that looks like an underwater volcano off the coast of Alaska. The structure may be spewing ...

Researchers from the National Oceanic and Atmospheric Administration Ship Fairweather and the University of New Hampshire analyze mapping data in the U.S. Coast Guard Cutter Healy’s computer lab while ...