It's a disaster on a staggering scale, and there are fears tonight for many Australians caught up in it. They're among hundreds missing after a wall of water and mud triggered by an ice avalanche roared through Nepal's border region.
More than 300 foreign tourists are unaccounted for after catastrophic flooding along the Nepal-China border, including at least 47 Americans. A landslide blocked a river, unleashing a torrent downstream. Scientists investigating whether a glacier collapse contributed
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