Bad weather and a massive ash column hampered efforts to assess whether Indonesia's Anak Krakatau volcano island could trigger another deadly tsunami as authorities said Friday the search for victims ...

A still image taken Wednesday shows a flooded area in Russia's Severo-Kurilsk, Sakhalin Region. Authorities in Russia's Sakhalin region declared a state of emergency, after the 8.8 magnitude ...

JAKARTA, Indonesia -- A tsunami apparently caused by the eruption of an island volcano killed at least 62 people around Indonesia's Sunda Strait, sending a wall of water crashing some 65 feet (20 ...

Tsunamis are giant waves caused mainly by underwater earthquakes, volcanic eruptions, or landslides. Unlike ordinary waves, tsunamis travel at high speeds across oceans and grow taller as they ...

Add Yahoo as a preferred source to see more of our stories on Google. Image of active volcano shows magma pressure inside volcanoes can destabilize slopes and trigger collapse. (CREDIT: YouTube / CC ...

Aerial images show the devastation in Tonga left behind after a violent offshore volcanic eruption sparked a tsunami and clouded the sky with ash. Communications with the island nation have largely ...

Santorini, one of the most popular tourist destinations in Greece, could soon be swamped by volcanic eruptions and tsunamis. The island has been rattled by 6,400 minor and moderate earthquakes this ...

When individuals hear volcanoes, they tend to envision blazing eruptions blasting into the air. However, volcanoes can also collapse sideways, with their sides, or flanks, collapsing. Such a collapse ...