Add Yahoo as a preferred source to see more of our stories on Google. When you think of the United States, images of sprawling cities and vast landscapes might come to mind, but not the hidden and ...

Since 2000, specialists at the National Museum of Natural History have produced the world’s foremost report on active volcanoes Sally Sennert Did you know that there are between 40 and 50 volcanoes ...

When you think of the United States, images of sprawling cities and vast landscapes might come to mind, but not the hidden and ever-present geological threat: volcanoes. While you might associate ...

Add Yahoo as a preferred source to see more of our stories on Google. Residents ride a tuk-tuk taxi along a road damaged by multiple earthquakes near the town of Kabanna in the north of Ethiopia.

POPOCATÉPETL VOLCANO, Mexico -- In the predawn darkness, a team of scientists climbs the slope of Mexico's Popocatépetl volcano, one of the world's most active and whose eruption could affect millions ...