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.

Flood-hit Kenya and Tanzania on alert as cyclone nears

Kenya and Tanzania were on alert on Saturday for a cyclone heading towards their Indian Ocean coastlines, threatening to pile on more misery after deadly floods that have ravaged the region.

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