News

Mauna Loa volcano stands as the largest and most active volcano on Earth. With a rich history of eruptions that have shaped the Island of Hawaʻi's...

You may have heard of radium in connection to French scientists Marie and Pierre Curie, or because it is in an environmental hazard. But what is it...

The USGS Hawaiian Volcano Observatory (HVO) is responsible for monitoring and studying one of the most active volcanic regions in the world. The...

Many people regard Yellowstone as an exceptional place that merits only positive superlatives. But in much of the broadcast, streaming, and popular...

HVO staff are conducting the annual Mauna Loa GPS campaign. During the survey, GPS instruments are deployed at established benchmarks so that their...

Last week’s “Volcano Watch” summarized Kīlauea’s explosive eruptions of 1924 and their impacts on communities. This week, we dig a little deeper and...

A team of scientists visited the new thermal area near Tern Lake to sample gases and measure temperatures.  The results of their work provide a...

Kīlauea began erupting explosively 100 years ago this week, for the first time in nearly a century. The eruption lasted for about 17 days, killing one...

The record of water chemistry data in Yellowstone predates the development of the pH (acidity) scale!  These data are a testament to numerous...

In 2018, a large eruption from the lower East Rift Zone of Kīlauea partially drained the summit magma reservoir, which caused portions of the...