Volcanism

Indonesia volcano death toll rises

The death toll from a sudden, spectacular eruption of Indonesia's Mount Semeru has risen to 13, disaster officials said on Dec. 5, as rescuers searched villages blanketed in molten ash for survivors.

The eruption of Java's biggest mountain caught locals by surprise on Dec. 4, sending thousands fleeing its path of destruction and forcing hundreds of families into makeshift shelters.

Island turns into open-air lab for tech-savvy volcanologists

They come with eagle-eyed drones and high-precision instruments. Aided by satellites, they analyze gas emissions and the flows of molten rock. On the ground, they collect everything from the tiniest particles to "lava bombs" the size of watermelons that one of nature's most powerful forces hurl as incandescent projectiles.

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