Key events9m agoGlacial collapse caused 'catastrophic impacts', says US agency26m agoSummary: at least 160 killed in Nepal flash flood as search for hundreds missing continuesGlacial collapse caused 'catastrophic impacts', says US agencyA glacial collapse caused seismic activity and “catastrophic” downstream impacts in Nepal and Tibet, the US Geological Survey is saying.Seismic activity initially reported as an earthquake “was instead a glacial collapse and debris flow” that “caused subsequent catastrophic impacts downstream”, the agency said on Thursday, quoted by Agence France-Presse.Summary: at least 160 killed in Nepal flash flood as search for hundreds missing continuesAuthorities in Nepal and Tibet have said they fear the death toll from catastrophic flooding could be much higher than 160 people already killed, as search and rescue efforts to locate the hundreds missing continue.A huge wall of mud and rock collapsed into a river on the Himalayan border of Nepal and Tibet on Wednesday, triggering the flash flood which washed away houses, roads and border crossings.Verified videos showed dozens of people swept away at the border, with authorities on both sides ⁠fearing far higher casualties and massive destruction.Officials in Tibet said they feared “major casualties” after a mudslide hit a border land crossing in the county of Gyirong.As darkness fell, authorities continued the grim task of recovering ‌and trying to identify bodies.Nepal police said 157 bodies had been recovered ‌so far. Three people were reported killed on the Tibet side of the body.Initial reports from Nepali officials suggested an earthquake in the area could have caused the lower part of a glacier to collapse and trigger the floods. The USGS later said the tremor recorded at the time was caused ​by the glacial rock and ice collapsing to the valley floor.Here’s what else is happening: