The deaths of at least five tourists in a volcanic eruption in New Zealand have raised questions over whether tour companies are taking enough precautions to keep visitors safe -- and whether tourists are aware of the risks.
Hawaii's Kilauea volcano could be bracing for another dangerous eruption after a pond of water was discovered inside its summit crater.
Residents of Southern California are on high alert after a 7.1-magnitude earthquake rocked communities near the Mojave Desert on Friday, just one day after a 6.4-magnitude quake occurred in the same area.
A volcano in the far eastern corner of Russia that was previously considered extinct may be waking up -- and an eruption could be catastrophic.
Southern California's Jurupa Valley has recently been rattled by a "swarm" of small earthquakes.
When Hawaii's Kilauea volcano spewed lava this spring and summer, destroying hundreds of homes and sending thousands fleeing, it was just a more dramatic episode of a long-running series: It's been erupting nearly continuously for 35 years.
More than 230 small earthquakes have hit parts of Alaska since Friday, when a 7.0-magnitude quake knocked out power, ripped open roads and splintered buildings near Anchorage, the US Geological Survey said.
