What we know about the link between Nepal’s flash floods and our climate crisis

In this week’s newsletter: The full scale of the disaster is still emerging, but as rescue efforts continue, scientists warn that a warming Himalayas could mean more deadly hazards

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At 8.37am local time last Wednesday, a huge mass of rock and ice sheared free from a mountain, sliding 1,200 metres to the valley floor in Nepal’s Langtang national park, about 60km north of the country’s capital, Kathmandu.

Horrifying images and videos soon emerged of a torrent of mud, water and debris that swept down the Lhende Khola valley at speeds approaching 150km/h. Flowing down the Lhende Khola, Bhotekoshi and Trishuli rivers that run between Tibet and Nepal, the flood water swept away homes, roads, bridges and power plants. Along the Trishuli, water levels rose by as much as nine metres in half an hour. As of the time of writing, the death toll of the disaster approached 1,000 people, with more than 4,400 on both sides of the border missing.