A powerful, 7.9-magnitude earthquake shook Nepal’s capital and the densely populated Kathmandu Valley before noon Saturday, collapsing houses and leveling centuries-old temples in the worst quake in the Himalayan nation in over 80 years. Thousands of Nepalese citizens spent the night outdoors following the devastating earthquake which killed at least 2,000 people. Mountaineering officials say the quake triggered avalanches which killed at least 17 people on Mount Everest – in the worst ever disaster on the peak.