'Glaciers in Himalayas retreating': Nepal floods triggered by 'glacier collapse & massive landslide'

A massive glacial collapse and landslide in the Himalayas triggered a 5.2 magnitude tremor and sent floodwaters 100 kilometers downstream. Expert Joseph Shea discusses the role of climate change in accelerating glacial retreat and the technical challenges of monitoring unstable glaciers in remote, high-altitude regions to predict such catastrophes.