Nepal-Tibet floods: What is a glacial collapse, how common is it?

4 hours ago

More than 1,500 people are missing across Nepal and China’s Tibet, including more than 800 foreign tourists, after rare flash glacial-lake outburst floods submerged towns and communities under a sludge of mud and water.

More than 270 people have been killed, but officials say the toll is expected to rise as rescue teams attempt to reach farther areas that have been cut off by the floods, with several key bridges and highways also devastated.

With skies still clear above the Nepal-China border, and no rain pouring, officials earlier believed that a magnitude 4.4 earthquake could have triggered the downstream floods.

However, several experts and the United States Geological...

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