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WASHINGTON: Lethal surges of mud and water that hit "like liquid concrete" are nearly impossible to predict and can not be outrun.
The cause of the deadly landslides and floods along the Nepal-Tibet border is not yet certain, but experts say the risk of such events is compounded by the extreme topography of the Himalayas.
At least 160 were killed and hundreds are missing in the wake of the disaster Wednesday morning.
Video from the Chinese side s...
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