A new study finds that nearly 300,000 people now live in flood-prone areas in Nepal’s Himalayas, as high-mountain hazards intensify. Outlets describe how a major rock-and-ice avalanche and flood on Aug. 26 illustrates the threat posed by glaciers and permafrost changes, including expanding glacial lakes and thawing mountain permafrost that can fuel floods, landslides and related events.
Researchers link the rising danger to environmental change and to where people build. Satellite-based evidence shows that settlements, roads and other infrastructure are increasing in valleys that are already vulnerable, narrowing the margin for safe evacuation and response. The New York Times reports that the overall built footprint along flood-prone riverbanks in the Himalayas has grown by about half in recent years, indicating that development is occurring alongside—rather than away from—known hazard zones.
