Asia: South & Central Devastating Nepal quake shakes four countries, killing more than 700

A magnitude 7.8 earthquake, centered in the densely populated Kathmandu Valley, killed at least 688 people in Nepal, and others in India,  Tibet, and Bangladesh. The quake triggered a deadly avalanche on Mount Everest.

(AP Photo/ Niranjan Shrestha)

 A powerful earthquake struck Nepal Saturday, killing at least 718 people across a swath of four countries as the violently shaking earth collapsed houses, leveled centuries-old temples and triggered avalanches on Mt. Everest. It was the worst tremor to hit the poor South Asian nation in over 80 years.