There aren't many places on the planet where you can see both active volcanoes and massive glaciers. This Icelandic national ...
Yellowstone National Park sits atop one of Earth's most closely watched volcanic systems. The U.S. Geological Survey documented 52 earthquakes in July 2025 alone. All tremors remain classified as ...
If you’ve been following the ongoing eruption of Kilauea, you may have seen the terms “gas piston” or “gas pistoning” show up in some of the USGS Hawaiian Volcano Observatory updates, photo captions, ...
Dick Fiske, who died on June 18 as he neared his 93rd birthday, was one of the most original thinkers ever at the USGS Hawaiian Volcano Observatory. His ideas, interpretations, and concepts underlie ...