The collapse of a Swiss glacier last week destroyed most of Blatten, a tiny village in Switzerland's southern Valais region that was home to about 300 people.
Footage of the May 28 collapse showed thousands of tonnes of ice and rubble hurtling down the mountainside into Blatten. The village was evacuated in the days before.
Celeste Saulo, secretary general of the World Meteorological Organisation, said at a conference in Geneva that the disaster was "a potent warning about our warming world".
"Early action avoided human losses," she said. "From understanding risk to effective forecasts, communication and evacuation, early warnings and early action work. They save lives."
The disaster is expected to cost hundreds of millions of dollars, the Swiss Insurance Association said on Monday.
The collapse was a "major disaster that is virtually unprecedented in its scale and impact on the affected population", it said in a statement.
A cheaper choice
Vanuatu: $130,000
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Cost: A minimum investment of $130,000 for a family of up to four, plus $25,000 in fees.
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Benefits: No tax, no restrictions on dual citizenship, no requirement to visit or reside to retain a passport. Visa-free access to 129 countries.
The biog
Prefers vegetables and fish to meat and would choose salad over pizza
Walks daily as part of regular exercise routine
France is her favourite country to visit
Has written books and manuals on women’s education, first aid and health for the family
Family: Husband, three sons and a daughter
Fathiya Nadhari's instructions to her children was to give back to the country
The children worked as young volunteers in social, education and health campaigns
Her motto is to never stop working for the country
