Lahar detection system upgraded for Mount Rainier

In the shadow of Washington State's Mount Rainier, about 90,000 people live in the path of a potential large lahar—a destructive, fluid and fast-moving debris flow associated with volcanic slopes.

Indonesia on alert for more eruptions at remote volcano

Indonesian authorities were on alert Friday for more eruptions from a remote island volcano that forced thousands to evacuate this week, as nearby residents began clearing debris after molten rocks rained down on their villages.

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