People scout for usable materials from debris after flash floods at Trishuli Center in Nepal's Nuwakot district on September 1, 2026. The huge wave of freezing water and debris, sparked by a glacial collapse on the China-Nepal border, killed at least 939 people and left nearly 4,500 missing, with Kathmandu warning reconstruction costs could run into the "billions of dollars". (Photo by Arun SANKAR / AFP via Getty Images)