Topic: Pacific Ring of Fire

Rescuers dig to reach dozens after Philippines quake

At least 13 people were killed and 40 are believed missing, most of them along the shore near the epicenter of the 6.9-magnitude quake that struck in a narrow strait just off Negros Island.

Natural events v. natural disasters

Nature is in constant motion. That has made a pleasantly habitable planet -- except when nature collides with the inhabitants.

Indonesia's Mt. Merapi shelters overflow with restless evacuees, flights canceled

One week after Indonesia's Mount Merapi unleashed its major blast, evacuation centers have reached capacity. Ongoing eruptions have sent more people fleeing and forced cancellation of some international flights.

Indonesia's Merapi volcano erupts again and threatens more

Indonesia's Mt. Merapi erupted again on Friday. Officials say most, but not all, of the danger is past.

World's most active volcanoes

Mount Merapi, located near Yogyakarta, Indonesia, is one of the country's most volatile volcanoes. It began erupting at dusk on Tuesday, and thousands evacuated the area surrounding it. It didn't come as a shock, as scientists have been expecting an eruption for a while.

Here are some of the world's most active volcanoes.

Tsunami and volcano response: Indonesia assesses back-to-back disasters

A volcanic eruption in Central Java sent thousands of panicked villagers fleeing from their homes as government officials attempted to assess the full damage from an tsunami in western Indonesia that killed more than 100 people less than 24 hours earlier.

Indonesia tsunami kills 113; scores more missing

Indonesia tsunami: Though hundreds of disaster officials were unable to get to many of the villages on the Mentawai islands — reachable only by a 12-hour boat ride — they were preparing for the worst.

Indonesia volcano: Mount Merapi erupts, 20 hurt by hot ash

Indonesia volcano Mount Merapi has erupted just before dusk on Tuesday. Scientists have warned that pressure building beneath Merapi's lava dome could trigger one of the most powerful blasts in years.

Iceland's Eyjafjallajökull volcano is nothing to 'Angry Sister' Katla

Every time in recorded history that Eyjafjallajökull volcano has erupted, the much larger Katla volcano has also erupted. Scientists are watching Katla carefully.

Samoa tsunami lesson: Early warning system too slow

The Samoa tsunami demonstrates a problem for early warning systems - massive waves crashed ashore before researchers could analyze the earthquake and sound the alarm. A second earthquake struck near Samoa Wednesday, where the death toll has topped 150.