The researchers conclude that the 1831 Zavaritskii eruption had a magnitude of 5 to 6, similar in power to the 1991 eruption ...

Large explosive eruptions occur in Yellowstone around once every 700,000 years, according to the U.S. Geological Survey.

That movement has now left one pool of molten material on the west of the caldera disconnected from any heat sources, which ...

From Bulgaria to Peru, you can expect a warm welcome in these destinations. Here’s how to see them at their best and most ...