Fears second catastrophic flood could hit Nepal as disaster kills over 350

The U.S. is pledging over $3 billion in aid following devastating floods and mudslides near the Nepal-China border. The disaster has left more than 780 people dead and 3,000 missing, including an Arizona man on a pilgrimage. Experts attribute the catastrophe to a glacial lake outburst, while local associations are organizing fundraisers to support the $4 billion rebuilding effort.