Three days after a catastrophic wall of water, mud and rock tore through Nepal's Himalayan valleys, the scale of the disaster is still coming into focus. At least 579 people are now confirmed dead, nearly 2,000 remain missing, and the danger is not over. Authorities are closely watching lakes formed in the wake of the glacier collapse, amid fears of further flooding. Stephanie Sy reports.

The scale of the disaster in the Himalayas is becoming clearer a day after catastrophic flooding tore through parts of Nepal and Tibet. Scientists believe the disaster was likely triggered by the collapse of a glacier, unleashing a torrent of water, mud and debris that swept away entire communities. Geoff Bennett discussed more with Dan Shugar of the waterSHED Lab at the University of Calgary.